ICD-10-CM diagnosis code
M21.059 Valgus deformity, not elsewhere classified, unspecified hip
- Billable
- Yes, a complete code (FY2026)
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Other codes in M21
124 complete codes in this category.
- M21.00Valgus deformity, not elsewhere classified, unspecified site
- M21.021Valgus deformity, not elsewhere classified, right elbow
- M21.022Valgus deformity, not elsewhere classified, left elbow
- M21.029Valgus deformity, not elsewhere classified, unspecified elbow
- M21.051Valgus deformity, not elsewhere classified, right hip
- M21.052Valgus deformity, not elsewhere classified, left hip
- M21.059Valgus deformity, not elsewhere classified, unspecified hip
- M21.061Valgus deformity, not elsewhere classified, right knee
- M21.062Valgus deformity, not elsewhere classified, left knee
- M21.069Valgus deformity, not elsewhere classified, unspecified knee
- M21.071Valgus deformity, not elsewhere classified, right ankle
- M21.072Valgus deformity, not elsewhere classified, left ankle
Documentation tips
- Make sure the note supports every element of the title, “Valgus deformity, not elsewhere classified, unspecified hip”: 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 M21.
The international WHO ICD-10 also has M21, 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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