ICD-10-CM 2027
ICD-10 code for Microalbuminuria
From the official ICD-10-CM alphabetic index entry “Microalbuminuria”. Page updated September 29, 2026.
About coding Microalbuminuria
The ICD-10-CM code for Microalbuminuria is R80.9 (Proteinuria, unspecified).
Within R80, choose R80.9 (unspecified) only when documentation doesn't support a more specific option: isolated proteinuria (R80.0), persistent proteinuria, unspecified (R80.1), orthostatic proteinuria, unspecified (R80.2), Bence Jones proteinuria (R80.3) and other proteinuria (R80.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 695 (Kidney and Urinary Tract Signs and Symptoms with MCC, relative weight 1.1139) and DRG 696 (Kidney and Urinary Tract Signs and Symptoms without MCC, relative weight 0.6679), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Microalbuminuria ICD-10 codes
What is the ICD-10 code for Microalbuminuria?
- R80.9 — Proteinuria, unspecified.
Is R80.9 billable?
- Yes. R80.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R80.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R80.9 as a principal diagnosis.
Is R80.9 a CC or MCC?
- No. R80.9 is neither a CC nor an MCC under MS-DRG v44.0.