ICD-10-CM diagnosis code
M22.12 Recurrent subluxation of patella, left knee
- Billable
- Yes, a complete code (FY2026)
- Category
- M22 Disorders of patella
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Other codes in M22
21 complete codes in this category.
- 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
- M22.2X1Patellofemoral 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
Documentation tips
- Make sure the note supports every element of the title, “Recurrent subluxation of patella, left knee”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to M22.
The international WHO ICD-10 also has M22, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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