ICD-10 Code for Involution
The ICD-10-CM 2027 alphabetic index lists involution, involutional with the subterms below. More specific codes depend on the details documented, as listed in the official index (4 codes, 4 billable).
Index entries for Involution
- breast, cystic – see Dysplasia, mammary, specified type NEC
- depression (single episode) –
F32.89- recurrent episode –
F33.9
- recurrent episode –
- melancholia (single episode) –
F32.89- recurrent episode –
F33.8
- recurrent episode –
- ovary, senile – see Atrophy, ovary
- thymus failure –
E32.8
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.