ICD-10 Code for Microdrepanocytosis
The ICD-10-CM code for microdrepanocytosis is D57.40 — Sickle-cell thalassemia without crisis. This is the code the Alphabetic Index gives for microdrepanocytosis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
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Which microdrepanocytosis code should you use?
The Alphabetic Index lists 6 codes under Microdrepanocytosis. 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.
Microdrepanocytosis with
| acute chest syndrome | D57.411 | Sickle-cell thalassemia, unspecified, with acute chest syndrome |
| cerebral vascular involvement | D57.413 | Sickle-cell thalassemia, unspecified, with cerebral vascular involvement |
| crisis | D57.419 | Sickle-cell thalassemia, unspecified, with crisis |
| pain | D57.419 | Sickle-cell thalassemia, unspecified, with crisis |
| splenic sequestration | D57.412 | Sickle-cell thalassemia, unspecified, with splenic sequestration |
| crisis › with specified complication NEC | D57.418 | Sickle-cell thalassemia, unspecified, with crisis with other specified complication |
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