ICD-10-CM 2027
ICD-10 code for AMH
From the official ICD-10-CM alphabetic index entry “AMH (asymptomatic microscopic hematuria)”. Page updated September 29, 2026.
About coding AMH
The ICD-10-CM code for AMH is R31.21 (Asymptomatic microscopic hematuria).
Within R31.2 (other microscopic hematuria), R31.21 is specifically for Asymptomatic microscopic hematuria. Related codes cover other microscopic hematuria (R31.29).
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), DRG 696 (Kidney and Urinary Tract Signs and Symptoms without MCC, relative weight 0.6679), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), 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 AMH ICD-10 codes
What is the ICD-10 code for AMH?
- R31.21 — Asymptomatic microscopic hematuria.
Is R31.21 billable?
- Yes. R31.21 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R31.21 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R31.21 as a principal diagnosis.
Is R31.21 a CC or MCC?
- No. R31.21 is neither a CC nor an MCC under MS-DRG v44.0.