R31.29 — Other microscopic hematuria

R31.29

ICD-10 Chapter 18: Symptoms, Signs & Abnormal Findings — illustrative image — Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99) — illustrative image

What this code means

Other microscopic haematuria is blood in the urine found on testing but not visible, other than the benign essential type.

Also called: microscopic hematuria, microhaematuria.

When this code is used

Used for other microscopic haematuria.

Where it sits in ICD-10-CM

Code R31.29 belongs to Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified, which covers codes R00–R99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Related symptoms

Blood in the urine

Frequently asked questions

What is ICD-10-CM code R31.29?

R31.29 is the ICD-10-CM diagnosis code for “Other microscopic hematuria”. Other microscopic haematuria is blood in the urine found on testing but not visible, other than the benign essential type.

When is code R31.29 used?

Used for other microscopic haematuria. It belongs to Chapter 18 of ICD-10-CM (Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.