M21.21 (Flexion deformity, shoulder) is an umbrella ICD-10-CM medical diagnosis code in the Diseases of the musculoskeletal system and connective tissue chapter. It identifies cases of flexion deformity, shoulder for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Category

M21.21 — Flexion deformity, shoulder

Chapter M00-M99: Diseases of the musculoskeletal system and connective tissue

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Sub-codes under M21.21

M21.211Flexion deformity, right shoulder M21.212Flexion deformity, left shoulder M21.219Flexion deformity, unspecified shoulder

Related diagnoses

M21.20Flexion deformity, unspecified site M21.22Flexion deformity, elbow M21.23Flexion deformity, wrist M21.24Flexion deformity, finger joints M21.25Flexion deformity, hip M21.26Flexion deformity, knee M21.27Flexion deformity, ankle and toes

Common questions about M21.21 (Flexion deformity, shoulder)

What does ICD-10 code M21.21 mean?

M21.21 is the ICD-10-CM 2025 code for Flexion deformity, shoulder. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.

Is M21.21 a billable diagnosis code?

M21.21 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under M21.21. Browse the sub-codes listed on this page.

Which ICD-10 chapter does M21.21 belong to?

M21.21 belongs to the chapter "Diseases of the musculoskeletal system and connective tissue" (codes M00-M99). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.

Where can I get plain-language information about Flexion deformity, shoulder?

For a plain-language explanation of Flexion deformity, shoulder, ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about Flexion deformity, shoulder" above to get a personalised answer.

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗