M22 — Disorder of patella
Is M22 billable?
No — M22 is a non-billable header code. M22 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 21 billable codes beneath M22.
Billable codes under this header
- M22.00Recurrent dislocation of patella, unspecified knee
- M22.01Recurrent dislocation of patella, right knee
- M22.02Recurrent dislocation of patella, left knee
- M22.10Recurrent subluxation of patella, unspecified knee
- M22.11Recurrent subluxation of patella, right knee
- M22.12Recurrent subluxation of patella, left knee
- M22.40Chondromalacia patellae, unspecified knee
- M22.41Chondromalacia patellae, right knee
- M22.42Chondromalacia patellae, left knee
- M22.90Unspecified disorder of patella, unspecified knee
- M22.91Unspecified disorder of patella, right knee
- M22.92Unspecified disorder of patella, left knee
- M22.2X1Patellofemoral disorders, right knee
- M22.2X2Patellofemoral disorders, left knee
- M22.2X9Patellofemoral disorders, unspecified knee
- M22.3X1Other derangements of patella, right knee
- M22.3X2Other derangements of patella, left knee
- M22.3X9Other derangements of patella, unspecified knee
- M22.8X1Other disorders of patella, right knee
- M22.8X2Other disorders of patella, left knee
- M22.8X9Other disorders of patella, unspecified knee
M22 at a glance
| Code | M22 |
|---|---|
| Description | Disorder of patella |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here
The conditions below are not part of M22, but a patient may have both at the same time. When documentation supports it, M22 and the excluded code may both be reported.
- traumatic dislocation of patella (S83.0-)
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M22, but a patient may have both at the same time. When documentation supports it, M22 and the excluded code may both be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Excludes2 — not included here — inherited from M20-M25
The conditions below are not part of M22, but a patient may have both at the same time. When documentation supports it, M22 and the excluded code may both be reported.
- joints of the spine (M40-M54)
What codes fall under M22? (7)
- M22.0Recurrent dislocation of patellanot billable
- M22.1Recurrent subluxation of patellanot billable
- M22.2Patellofemoral disordersnot billable
- M22.3Other derangements of patellanot billable
- M22.4Chondromalacia patellaenot billable
- M22.8Other disorders of patellanot billable
- M22.9Unspecified disorder of patellanot billable
How long has M22 existed?
M22 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.