All ICD10 Codes

N25

Non-Billable
ChapterN00–N99
Rankcategory
Official Description

Disorders resulting from impaired renal tubular function

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 14: Diseases of the Genitourinary System (N00-N99).

CH14 Parent Instructions

Excludes2(Not included here)
  • 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)

N25-N29 Parent Instructions

Excludes2(Not included here)
  • disorders of kidney and ureter with urolithiasis (N20-N23)

Clinical Hierarchy

CH14Diseases of the genitourinary system (N00-N99)
N25-N29Other disorders of kidney and ureter (N25-N29)
N25Disorders resulting from impaired renal tubular function
N25.0Renal osteodystrophy
N25.1Nephrogenic diabetes insipidus
N25.8Other disorders resulting from impaired renal tubular function
N25.9Disorder resulting from impaired renal tubular function, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N25:

blockN25-N29
Other disorders of kidney and ureter (N25-N29)
View context instructions
chapterCH14
Diseases of the genitourinary system (N00-N99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to N25. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Acidosis (lactic)2 unique routes
kidney, tubular→N25
renal (hyperchloremic) (tubular)→N25
Depletion1 unique routes
potassium
nephropathy→N25
Diabetes, diabetic (mellitus) (sugar)2 unique routes
insipidus(2 variants)
nephrogenic→N25
vasopressin resistant→N25
Disease, diseased2 unique routes
Lightwood's (renal tubular acidosis)→N25
renal (functional) (pelvis)
phosphate-losing (tubular)→N25
Disorder (of)10 unique routes
impaired renal tubular function→N25(2 variants)
specified NEC→N25
kidney(3 variants)
functional (tubular)→N25
tubular function→N25(2 variants)
specified NEC→N25
phosphate-losing tubular→N25
renal function, impaired (tubular)→N25
tubular, phosphate-losing→N25
tubulo-renal function, impaired→N25(2 variants)
specified NEC→N25
Dwarfism1 unique routes
renal→N25
Hyperparathyroidism1 unique routes
secondary (renal)→N25
Impaired, impairment (function)4 unique routes
kidney(2 variants)
disorder resulting from→N25(2 variants)
specified NEC→N25
renal (acute) (chronic)(2 variants)
disorder resulting from→N25(2 variants)
specified NEC→N25
Infancy, infantile, infantilism1 unique routes
renal→N25
Lightwood's disease or syndrome (renal tubular acidosis)1 unique routes
Direct index entry→N25

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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