ICD-10-CM 2027
ICD-10 code for patella disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › patella”. Page updated September 29, 2026.
About coding patella disorder
The ICD-10-CM code for patella disorder is M22.9 (Unspecified disorder of patella). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M22.9.
Within M22, choose M22.9 (Unspecified disorder of patella) only when documentation doesn't support a more specific option: recurrent dislocation of patella (M22.0), recurrent subluxation of patella (M22.1), Patellofemoral disorders (M22.2), other derangements of patella (M22.3), Chondromalacia patellae (M22.4) and other disorders of patella (M22.8).
To report this condition, pick the subcode that matches the documentation: M22.90 (unspecified knee), M22.91 (right knee) and M22.92 (left knee).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific patella disorder codes (official index)
Common questions about patella disorder ICD-10 codes
What is the ICD-10 code for patella disorder?
- M22.9 — Unspecified disorder of patella (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: M22.3X, M22.8X.
What is the ICD-10 code for derangement nec patella disorder?
- M22.3X — Other derangements of patella (header code; choose a more specific subcode).
Is M22.9 billable?
- No. M22.9 is a header code. Report one of its more specific subcodes instead.