M21.2
Header — not billableFlexion deformity
The ICD-10 code for flexion deformity is M21.2.
M21.2 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 8 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under M21.2
- M21.20Flexion deformity, unspecified site
- M21.21Flexion deformity, shouldernon-billable header
- M21.22Flexion deformity, elbownon-billable header
- M21.23Flexion deformity, wristnon-billable header
- M21.24Flexion deformity, finger jointsnon-billable header
- M21.25Flexion deformity, hipnon-billable header
- M21.26Flexion deformity, kneenon-billable header
- M21.27Flexion deformity, ankle and toesnon-billable header
Related codes in this category
- M21.0Valgus deformity, not elsewhere classifiednon-billable header
- M21.1Varus deformity, not elsewhere classifiednon-billable header
- M21.3Wrist or foot drop (acquired)non-billable header
- M21.4Flat foot [pes planus] (acquired)non-billable header
- M21.5Acquired clawhand, clubhand, clawfoot and clubfootnon-billable header
- M21.6Other acquired deformities of footnon-billable header
- M21.7Unequal limb length (acquired)non-billable header
- M21.8Other specified acquired deformities of limbsnon-billable header
- M21.9Unspecified acquired deformity of limb and handnon-billable header
- M21.2Flexion deformitynon-billable header