NPI Atlas

ICD-10 Code for Microdrepanocytosis

The default ICD-10-CM 2027 code for microdrepanocytosis is D57.40 – Sickle-cell thalassemia without crisis. More specific codes depend on the details documented, as listed in the official index (6 codes, 6 billable).

Main code: D57.40 – Sickle-cell thalassemia without crisis
Billable: Yes

Index entries for Microdrepanocytosis

with
- acute chest syndrome – D57.411
- cerebral vascular involvement – D57.413
- crisis (painful) – D57.419
  - with specified complication NEC – D57.418
- pain (vaso-occlusive) – D57.419
- splenic sequestration – D57.412

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.