Moreover, the skeletal resistance to parathyroid hormone is not only a high-turnover bone accompanying SHPT, but may also play a crucial role in the onset of low-turnover bone disease in uremia. This free tool is designed to help billers and coders navigate the new ICD-10-CM code set. My question is does he have to state that the secondary hyperparathyroidism is of renal origin in order for me to code it that way? Love Coding! Expert. 2); hungry bone syndrome (E83. The most frequent causes are chronic kidney disease (CKD), malabsorption syndromes, and chronic inadequate sunlight exposure, acting via alterations in vitamin D, phosphorus,. Acute renal failure following labor and/or delivery; Postpartum (after childbirth) acute kidney disease; non-anuria and oliguria (R34) ICD-10-CM Diagnosis Code H51. E21. Search Results. Family history of hyperplastic colon polyps. Patient has CKD and Secondary hyperparathyroidism, do we need to assume the linkage between both and code N25. 2 Nausea with vomiting 0R. 11 Nausea oanl e R791. Type 1 Excludes. ICD-10 Games Learn codes with classic games like Flashcards and Hangman. 81 converts directly to: 2024 ICD-10-CM N25. 8: Other pyelonephritis or pyonephrosis not specified as acute or chronic: 591. Reviews, Revisions, and Approvals Reviewed Date Approval Date . 95 500 results found. Renal agenesis, unspecified. 11 Nausea oanl e R791. 252. Specifically for this code: secondary hyperparathyroidism of renal origin (N25. 8: Other pyelonephritis or pyonephrosis not specified as acute or chronic: 591. 81 Secondary Hyperthyroidism of Renal Origin ICD-10 Code: E11. 588. PatientsICD 10 code for Small kidney of unknown cause. The 2024 edition of ICD-10-CM B07. Type 2 Excludes. 8 became effective on October 1, 2023. 11 Nauseaonal e R791. The consequent hypersecretion of PTH depresses calcium levels. 81); infantile and juvenile osteomalacia (E55. Hip fractures were identified based on relevant ICD codes (ICD8: 8200 or ICD 10: S720, S721, or S722) combined with a relevant code for a procedure (SKS code) related to hip. 3, M83. This free tool is designed to help billers and coders navigate the new ICD-10-CM code set. Chronic kidney disease due to type 2 diabetes mellitus with hyperparathyroidism due. N25. 2 result found: ICD-10-CM Diagnosis Code E21. Diarher a R590. 81 Secondary hyperparathyroidism of renal origin. ICD-10-CM Code N25. 2 [convert to ICD-9-CM] Chronic kidney disease, stage 2 ( mild) with mild chronic kidney disease; Diabetes type 2 with mild. It is mainly manifested as parathyroid hyperplasia caused by abnormal. 1. 00 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 252. Parent Code: E21 - Hyperparathyroidism. ICD-10-CM Diagnosis Code Z83. Advertise with Us | License ICD10 Data. 02 was previously used, E21. 10 28 Cirrhosis of Liver 0. The ICD-10-CM code E11. ICD-10-CM/PCS MS-DRG v40. E21. 3 CKD Stage 3 ICD-10 Code: N25. 9 Diabetes Mellitus . 01 Primary hyperparathyroidism; 252. non-renal 252. Secondary hyperparathyroidism of renal origin. 1 [convert to ICD-9-CM] Hyperprolactinemia. If secondary hyperparathyroidism of renal origin is confirmed. 6 End stage renal disease N25. 0 Calculus Of Kidney N25. A claim submitted without a valid ICD-10-CM diagnosis code will be returned to the provider as an incomplete claim under Section 1833(e) of the Social Security Act. 2 Osteopetrosis. 1 Secondary hyperparathyroidism, not elsewhere classified E55. 891 Long term (current) use of opiate analgesicThe mean percentage change from baseline PTH levels was −49% with etelcalcetide versus +29% with placebo in cohort 2 (etelcalcetide 10 mg), while in cohort 3 (etelcalcetide 5 mg) the percentage change was −33% versus +2%. 00. 4 Long term (current) use of insulin Z79. 01: ICD9Data. 9 N19 N20. The code N25. Normocalcemic primary hyperparathyroidism (PHPT) is a newer phenotype of PHPT defined by elevated PTH concentrations in the setting of normal serum calcium levels. The 2024 edition of ICD-10-CM E83. Darrhi ea R509. It is also correlated to low bone mineral density (BMD), but this correlation is less clear in CKD patients. Postpartum acute kidney failure. Hyperparathyroidism and other disorders of parathyroid gland. 81 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 588. 1) E21. 02 Excludes . Secondary hyperparathyroidism of renal origin: N2589: Other disorders resulting from impaired renal tubular function: N259: Disorder resulting from impaired renal tubular function, unspecified:Primary hyperparathyroidism is a relatively common endocrine disorder that can cause hypercalcemia with significant renal and skeletal complications over time, although most patients identified in. 4X5A. 9 may differ. 81 Secondary hyperparathyroidism of renal origin. It is not responsive to vasopressin (antidiuretic hormone), and it is characterized by excessive thirst and excessive urine production. . 50 through E83. Nephrogenic diabetes insipidus: N2581: Secondary hyperparathyroidism of renal origin: N2589: Other disorders resulting from impaired renal tubular function: N259: Disorder resulting from impaired renal tubular. 1 is a billable ICD-10 code used to specify a medical diagnosis of secondary hyperparathyroidism, not elsewhere classified. 0); familial hypocalciuric hypercalcemia (E83. 2 Other hyperparathyroidismRenal hyperparathyroidism (rHPT) is a complex and challenging disorder. N25. Tabs. 1 Nephrogenic diabetes insipidus; N25. ICD-10-CM Diagnosis Code Z83. Only patients diagnosed with secondary hyperparathyroidism of renal origin (ICD-10-CM Diagnosis Code N25. 81 Secondary hyperparathyroidism of renal origin R25. 01: ICD9Data. 81 Secondary hyperparathyroidism (of renal origin) Associated ICD-9-CM PT diagnoses/treatment diagnoses that may be directly related. 0 Renal osteodystrophy N25. . Toggle navigation. 0, E16-E31, E34. 2 - other international versions of ICD-10 N26. 1 CKD, stage 1 Kidney damage eGFR >90 N18. 81 - Secondary hyperparathyroidism of renal origin. This list is intended to assist ordering physicians in providing ICD-10 Diagnostics codes as required by Medicare and other Insurers. 31, G93. Type 2 diabetes mellitus with diabetic chronic kidney disease. 30X0 Chronic Gout due to renal impairment,. 81. 9 became effective on October 1, 2023. 6 End stage renal disease N18. There is a risk of miscoding when assigning an ICD-code to the medical records, where we urge clinicians to be careful, not to confuse hypoparathyroidism with hyperparathyroidism or hypocalcemia due to kidney disease. ICD-10-CM Diagnosis Code N25. 81 Secondary hyperparathyroidism (of renal origin) Source: 2023 ICD-10-CM CMS General Equivalence Mappings. Chronic kidney disease due to type 2 diabetes mellitus with hyperparathyroidism due to end stage renal disease on dialysis; Dm 2 w diabetic ckd, secondary hyperparathyroidism due to esrd, on dialysis; Hyperparathyroidism due to end stage renal disease on dialysis; Hyperparathyroidism due to renal insufficiency;. ICD-9-CM 252. Calcium, phosphorus, and vitamin D metabolism are affected in secondary hyperparathyroidism. 81. ICD-10-CM Diagnosis Code O14. 89 may differ. Secondary hyperparathyroidism (of renal origin) Short description: SEC HYPERPARATHYRD-RENAL. Secondary hyperparathyroidism of renal origin. 81 ICD-10-CM Diagnosis Code N25. 9 Chronic kidney disease, unspecified N25. 8 may differ. Its pathophysiology is mainly due to hyperphosphatemia and vitamin D deficiency and resistance. Secondary hyperparathyroidism is a condition in which a disease outside of the parathyroid glands causes all of the parathyroid glands to become enlarged and hyperactive. 81) From Section E20-E35: galactorrhea (N64. 81 is a valid billable ICD-10 diagnosis code for Secondary hyperparathyroidism of renal origin . 9 Disorder resulting from. 1 While modest increases in parathyroid hormone levels may reflect an appropriate compensatory response, levels. N25. 02 and ICD-10-CM E21. Hyperparathyroidism, secondary (non renal); Secondary hyperparathyroidism of nonrenal origin; secondary hyperparathyroidism of renal origin (N25. Secondary hyperparathyroidism (SHPT) is the most common complication of advanced renal disease, and an independent risk for all-cause mortality and cardiovascular mortality. We hope you find it helpful, and thanks for stopping by! Complications of hyperparathyroidism are mainly related to the long-term effect of too little calcium in your bones and too much calcium in your bloodstream. Applicable To. 90 was revised. 711. This is the American ICD-10-CM version of N22 - other international versions of ICD-10 N22 may differ. Parent Code: E21 - Hyperparathyroidism. Showing 1-25: ICD-10-CM Diagnosis Code N18. 8 - other international versions of ICD-10 E20. ICD-10-CM/PCS MS-DRG v38. 1 Nephrogenic diabetes insipidus. 500 results found. com : 252. 1 ICD-10. 1 for Secondary hyperparathyroidism, not elsewhere classified is a medical classification as listed by WHO under the range -Disorders. 81 588. Subscribe to Codify by AAPC and get the code details in. Code. Chronic kidney disease (CKD) is a complex and multifactorial disease, and one of the most prevalent worldwide. Search Page 1/1: E21. 3) Related MeSH Terms Hyperparathyroidism D006961. ICD-10-CM Diagnosis Codes that Support Medical Necessity. AS kidney function declineS, there is a progressive disruption in the metabolism . 1 became effective on October 1, 2023. 81 [convert to ICD-9-CM] Secondary hyperparathyroidism of renal origin. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. Excludes1: secondary hyperparathyroidism of renal origin (N25. Search Page 1/1: N2581. N04. A buildup of calcium under your skin, which can cause painful, open skin sores and infections. N21. 00 is a legacy non-billable code used to specify a medical diagnosis of hyperparathyroidism, unspecified. by the occurrence of SHPT using either an ICD-10-GM code N25. 9 Retention of urine unspecified R35. 9 may differ. 1 - other international versions of ICD-10 E21. Chronic kidney disease due to type 2 diabetes mellitus with hyperparathyroidism due to end. ICD-9: 252. Convergence insufficiency (eye condition) ICD-10-CM Diagnosis Code N25. 1 is a valid billable ICD-10 diagnosis code for Secondary hyperparathyroidism, not elsewhere classified . 22, E10. KDIGO “Clinical Practice Guidelines for Bone Metabolism and Disease. 81 is a billable diagnosis code used to specify a medical diagnosis of secondary. 6 equates to end stage renal disease (ESRD). 42 though describes clearly hypercalcemia, it is idiopathic; and not so convinced to assign. The increased PTH secretion, in turn, causes increased calcium in the blood by acting on bones, intestines, and kidneys. 19 Complication of transplant kidneyPage kidney. Causes of Secondary Hyperparathyroidism. 30 Other cirrhosis of liver K74. Prolonged low serum calcium levels trigger PTH secretion, leading to parathyroid cell proliferation and hyperplasia []. 02 If the documentation does not specify that the secondary hyperparathyroidism is of renal origin, however, there is documentation of chronic kidney disease, do you make the assumption that the secondary hyperparathyroidsim is of renal origin?. 81 - Secondary hyperparathyroidism (of renal origin) The above description is abbreviated. However, the term is more generally used. disease, dialysis; End stage renal disease due to hypertension; End stage renal disease due. 1. N25. ICD-10-CM10th Revision. ICD-10-CM Diagnosis Code I13. 9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. 81) ICD-10. Secondary hyperparathyroidism of renal origin. Synonyms: brown tumor of hyperparathyroidism, calcifying panniculitis due to. Tertiary hyperparathyroidism (HPT III) occurs when an excess of parathyroid hormone (PTH) is secreted by parathyroid glands, usually after longstanding secondary hyperparathyroidism. 81 Secondary hyperparathyroidism of renal origin + + 4D: Impaired joint mobility, motor function, muscle performance, and. 10. 08 :The validity of the ICD-10 diagnosis of hypoparathyroidism in the Swedish National Patient Register is high. Showing 76-100: ICD-10-CM Diagnosis Code H04. 01 Acute Cystitis With Hematuria N30. 9 Urethral Disorder. Patients with stage 3, 4 and 5 CKD are at risk of SHPT. 1-N18. e. 1 Secondary hyperparathyroidism, not elsewhere classified; specified NEC - E21. 2. . N22 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Our ICD-9 Index points to 588. 0 Definitions Manual. Renal tubulo-interstitial disorders in diseases classified elsewhere: N250: Renal osteodystrophy: N251: Nephrogenic diabetes insipidus: N2581: Secondary hyperparathyroidism of renal origin: N2589: Other disorders resulting from impaired renal tubular function: N259: Disorder resulting from impaired renal tubular function,. The 2024 edition of ICD-10-CM N25. Renal tubulo-interstitial disorders in diseases classified elsewhere: N250:. Chronic kidney disease due to type 2 diabetes mellitus with hyperparathyroidism due. 81 – other international versions of ICD-10 N25. Type 1 Excludes. 2024 ICD-10-CM Range E00-E89. 2 Dependence of renal dialysis Z91. 81 - Secondary hyperparathyroidism (of renal origin) The above description is abbreviated. Renal sclerosis, unspecified. This is the American ICD-10-CM version of N27. N25. Chronic kidney disease mineral and bone disorder (CKD-MBD) is characterized by biochemical abnormalities (calcium, phosphate, parathyroid hormone [PTH], and vit. 81) who underwent parathyroidectomy with or without auto-transplantation were included. The accumulation of phosphate, the increased FGF23 levels, the reduction in active vitamin D production, and the tendency to hypocalcemia are persistent stimuli for the development and progression of parathyroid. Secondary hyperthyroidism and metabolic syndrome. BILLABLE | ICD-10 from 2011 - 2016. of calcium, phosphorus, vitamin D and parathyroid hormone (PTH). Codes. 2: Readmission Rate with ICD N2581 - Secondary hyperparathyroidism of renal origin: 32. View ICD-10 Tree Chapter 4 - Endocrine, nutritional and metabolic. Percentage of patients reaching a PTH value reduction of ≥30% was 76% in etelcalcetide 10 mg cohort versus. 0 [convert to ICD-9-CM]. Assays of the appropriate vitamin D levels for ICD-10 codes E55. The disease may be divided into 3 forms: a) primary, b) secondary, c) tertiary (secondary refractory form). 1 Stage 2 89 - 60 N18. Plan: Will repeat labs in 1 year, CKD stable . ICD-10 code N25. 02: Hyperparathyroidism 252. Primary hyperparathyroidism is rare in children; hyperplasia is more frequent during. N25. 0) OTHER RENAL Q61. Right diffuse secondary choroid atrophy. 2 result found: ICD-10-CM Diagnosis Code N25. J Am Soc Nephrol. 1 - other international versions of ICD-10 N21. 3 Primary hyperparathyroidism - Hyperparathyroidism, unspecified E41 Nutritional marasmus E43 Unspecified severe protein-calorie malnutrition. If secondary hyperparathyroidism of renal origin is confirmed, document the diagnosis The consequent hypersecretion of PTH depresses calcium levels. 0)—Primary hyperparathyroidism. ICD 10 CM Code Description . 1 may differ. Acute kidney failure with medullary necrosis: N178: Other acute kidney failure: N179: Acute kidney failure, unspecified: N19: Unspecified kidney failure: N250: Renal osteodystrophy: N251: Nephrogenic diabetes insipidus: N2581: Secondary hyperparathyroidism of renal origin: N2589: Other disorders resulting from impaired renal tubular function: N259 Renal osteodystrophy: N251: Nephrogenic diabetes insipidus: N2581: Secondary hyperparathyroidism of renal origin: N2589: Other disorders resulting from impaired renal tubular function: N259: Disorder resulting from impaired renal tubular function, unspecified: N261: Atrophy of kidney (terminal) N269: Renal sclerosis, unspecified: N270: Small. E83. Family history of hyperplastic colon polyps. 9 is used to diagnose a patient with Type 2 Diabetes Mellitus without complications. 0 Kidney transplant status. The primary goal of surgery for renal HPT is the elimination of the PTH excess with prevention of persistent/recurrent disease and avoidance of postoperative. ICD-10-CM Diagnosis Code N18. 212. 1 for Secondary hyperparathyroidism, not elsewhere classified is a medical classification as listed by WHO under the range -Disorders. ICD-10-CM Documentation and Coding Best Practices Hyperparathyroidism Overview Greater than normal secretion of parathyroid hormone (PTH). Code History. 1 Secondary hyperparathyroidism, not elsewhere classified N25. 00 was previously used, E21. 1 [convert to ICD-9-CM] Secondary hyperparathyroidism, not elsewhere classified. 2 result found: ICD-10-CM Diagnosis Code E21. 8 Other disorders resulting from impaired renal. Chronic kidney disease due to type 2 diabetes mellitus with hyperparathyroidism due to end stage renal disease on dialysis; Dm 2 w diabetic ckd, secondary. Treatment with cinacalcet began after 16 months following KTx. ICD-10-CM Diagnosis Code Z83. 81 Chronic Gout due to renal impairment, unsp site, w/o tophus M1A. 700 Other kidney and urinary tract diagnoses without cc/mcc; Convert N05. 81 converts directly to: 2024 ICD-10-CM N25. secondary (renal) - N25. 0 – M83. 81 Secondary Hyperparathyroidism of renal origin N28. 0 Kidney transplant status T86. 73 m 2 to >50% in patients with a GFR. Code Version: 2022 ICD-10-CM. This means that in all cases where the ICD9 code 252. Any disorder that results in hypocalcemia will elevate parathyroid hormone levels and can serve as a cause of secondary hyperparathyroidism (SHPT). Any disorder that results in hypocalcemia will elevate parathyroid hormone levels and can serve as a cause of secondary hyperparathyroidism (SHPT). , secondary hyperparathyroidism due to esrd, on dialysis; End stage renal disease on dialysis due. The 2024 edition of ICD-10-CM N22 became effective on October 1, 2023. This is the American ICD-10-CM version of E20. adult osteomalacia (M83. 81 [convert to ICD-9-CM. ICD-10 Code: N25. 1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Family history of hyperplastic colon polyps. Secondary hyperparathyroidism of renal origin. As described above, the reason for secondary PTH elevation in patients with renal failure is a combination of low calcium and vitamin D levels as well as elevated phosphorus levels. 9 Renal insufficiency Z99. e. secondary hyperparathyroidism (of renal origin) ICD-9-CM Volume 2 Index entries containing back-references to 252. Kidney failure requiring dialysis (GFR less than 25) If you are not on dialysis, or had kidney failure for years, it is almost impossible to have secondary hyperparathyroidism due to kidney problems. 81 Secondary hyperparathyroidism of renal origin. 9: Sepsis:. ICD-10-CM N25. This is the American ICD-10-CM version of E20. -) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions. 81 is a valid ICD-10-CM diagnosis code meaning 'Secondary hyperparathyroidism of renal origin'. 2022 - New Code 2023 2024 Billable/Specific Code. Learn what this code entails, from its clinical information, if it’s billable. 1 Secondary hyperparathyroidism, not elsewhere classified;. ; N25. This is the American ICD-10-CM version of N21. -); ectopic hyperparathyroidism (E34. 0); familial hypocalciuric hypercalcemia (E83. secondary(of renal origin) 588. 5. N25. 81. e. It develops early in the course of renal failure and is associated with increased risks of fractures, cardiovascular disease and death. 2 Osteopetrosis Z68. KDIGO “Clinical Practice Guidelines for Bone Metabolism and Disease in Chronic Kidney Disease” recommends testing for bone disease and disorders of calcium and phosphorus. N25. -); ectopic hyperparathyroidism (E34. ICD-9-CM 588. HCC. 2015/16 ICD-10-CM E21. This is the American ICD-10-CM version of N25. Secondary hyperparathyroidism of renal origin Q78. 1 CKD, stage 1 Kidney damage eGFR >90 N18. 9 Disorder resulting from impaired renal tubular function, unspecified. -) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions. N25. N25. 1?. ICD-10-CM or ICD-10-PCS code value. 1 Definitions Manual. Controlling serum levels of PTH, phosphorus, calcium, and 25-hydroxy vitamin-D improves morbidity and mortality in patients with CKD [ 54 ]. Plan: Will repeat labs in 1 year, CKD stable . 1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. 1 - other international versions of ICD-10 E21. Disorders of calcium metabolism. 81); infantile and juvenile osteomalacia (E55. 1 [convert to ICD-9-CM] Secondary hyperparathyroidism, not elsewhere classified Hyperparathyroidism,. Endocrine, nutritional and metabolic diseases. This occurs from a disorder either within the parathyroid glands (primary hyperparathyroidism) or as response to external stimuli (secondary hyperparathyroidism). Rules. The clinical consequences of SHP in CKD are protean, encompassing bone and mineral abnormalities but as recently identified, also several metabolic and cardiovascular problems, the most. 0 became effective on October 1, 2023. 81 is a billable ICD code used to specify a diagnosis of. 1. Patients should be informed of the possibility of a relatively long (6 days) length of stay after surgery as well as the moderate possibility (>20%) of another hospitalization. The risk of postoperative hungry bone syndrome after parathyroidectomy for secondary hyperparathyroidism of renal origin may alter the course of treatment, including the hospital length of stay and readmission rates. N25. Without such documentation, accurate coding cannot be achieved. We sought to identify additional patient or hospital factors that might contribute to hungry bone syndrome after parathyroidectomy. Rules. 81 Secondary hyperparathyroidism (of renal origin) ICD-10-CM Diagnosis Code E21. secondary(of renal origin) 588. To view the entire topic,. com : 252. Secondary hyperparathyroidism, non-renal Short description: Sec hyprprthyrd nonrenal. Observations were conducted on a group of 32 patients. Multivariable logistic regression was used to identify independent factors associated with prolonged LOS and 30-day readmission after parathyroidectomy. Hyperparathyroidism, tertiary; Tertiary hyperparathyroidism; familial hypocalciuric hypercalcemia (E83. Now, you yourself can research to select the suitable code. Renal agenesis. Renal and perinephric abscess: N158: Other specified renal tubulo-interstitial diseases: N159: Renal tubulo-interstitial disease, unspecified: N16: Renal tubulo-interstitial disorders in diseases classified elsewhere: N170: Acute kidney failure with tubular necrosis: N171: Acute kidney failure with acute cortical necrosis: N172 Hyperparathyroidism due to end stage renal disease on dialysis; Hyperparathyroidism due to renal insufficiency; Hyperparathyroidism, secondary; Secondary hyperparathyroidism; Secondary hyperparathyroidism due to esrd, on dialysis; ICD. Search All ICD-10 Toggle Dropdown. Background . Your parathyroid glands are overworking. 89 [convert to ICD-9-CM] Other disorders resulting from impaired renal tubular. Hyperparathyroidism, unspecified (exact match) This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. 500 results found. 0 Idiopathic hypoparathyroidism E20. ICD-10-CM Diagnosis Codes. INTRODUCTION. Patients with rHPT experience increased rates of cardiovascular problems and bone disease. 0. 1 Abnormal weight gain: R63. , Centers for Medicare and Medicaid Services and the National Center for Health Statistics, 2018. Patients with rHPT experience increased rates of cardiovascular problems and bone. 81 Secondary hyperparathyroidism (of renal origin) Associated ICD-9-CM PT diagnoses/treatment diagnoses that may be directly related End stage renal disease: N189: Chronic kidney disease, unspecified: N19: Unspecified kidney failure: N250: Renal osteodystrophy: N251: Nephrogenic diabetes insipidus: N2581: Secondary hyperparathyroidism of renal origin: N2589: Other disorders resulting from impaired renal tubular function: N259: Disorder resulting from impaired renal tubular. 81 [convert to ICD-9-CM] Secondary hyperparathyroidism of renal origin. 59 Disorders of calcium metabolism N18. 3 CKD Stage 3 ICD-10 Code: N25. Secondary hyperparathyroidism (2° HPT) is the elevation of parathyroid hormone (PTH) in response to hypocalcemia induced by phosphate retention and reduced calcitriol synthesis as a consequence of reduced renal function. Non-Billable On/After Oct 1/2015. 0 became effective on October 1, 2023.