ICD-10 Code for Deformity

The default ICD-10-CM 2027 code for deformity is Q89.9 – Congenital malformation, unspecified. More specific codes depend on the details documented, as listed in the official index (255 codes, 199 billable).

Main code
Q89.9 – Congenital malformation, unspecified
Billable
Yes

Index entries for Deformity

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.