N25.81

Secondary hyperparathyroidism of renal origin

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC ESRD V24

HCC23

Other Significant Endocrine and Metabolic Disorders

RxHCC V08

RXHCC43

Pituitary, Adrenal Gland, and Other Endocrine and Metabolic Disorders

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · N25.81
Excludes 1

secondary hyperparathyroidism, non-renal (E21.1)

Excludes 2

metabolic disorders classifiable to E70-E88

Inherited from N25-N29Other disorders of kidney and ureter
Excludes 2

disorders of kidney and ureter with urolithiasis (N20-N23)

Inherited from chapter 14Diseases of the genitourinary system
Excludes 2

certain conditions originating in the perinatal period (P04-P96) certain infectious and parasitic diseases (A00-B99) complications of pregnancy, childbirth and the puerperium (O00-O9A) congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) endocrine, nutritional and metabolic diseases (E00-E88) injury, poisoning and certain other consequences of external causes (S00-T88) neoplasms (C00-D49) symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Official Guidelines for N25.81

FY 2026 ›
I.C.14Chapter-specific guidanceChapter 14: Diseases of Genitourinary System (N00-N99)

Subsections

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