ICD-10 Code for Microangiopathy
Also indexed as (peripheral)
The ICD-10-CM code for microangiopathy is I73.9 — Peripheral vascular disease, unspecified. This is the code the Alphabetic Index gives for microangiopathy with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
I73.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which microangiopathy code should you use?
The Alphabetic Index lists 3 codes under Microangiopathy. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| thrombotic | M31.10 | Thrombotic microangiopathy, unspecified |
Microangiopathy thrombotic
| hematopoietic stem cell transplantation-associated [HSCT-TMA] | M31.11 | Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA] |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources