M21.33 (Wrist drop (acquired)) is an umbrella ICD-10-CM medical diagnosis code in the Diseases of the musculoskeletal system and connective tissue chapter. It identifies cases of wrist drop (acquired) for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Category

M21.33 — Wrist drop (acquired)

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

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Sub-codes under M21.33

M21.331Wrist drop, right wristM21.332Wrist drop, left wristM21.339Wrist drop, unspecified wrist

Related diagnoses

M21.37Foot drop (acquired)

Common questions about M21.33 (Wrist drop (acquired))

What does ICD-10 code M21.33 mean?
M21.33 is the ICD-10-CM 2025 code for Wrist drop (acquired). 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 M21.33 a billable diagnosis code?
M21.33 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under M21.33. Browse the sub-codes listed on this page.
Which ICD-10 chapter does M21.33 belong to?
M21.33 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 Wrist drop (acquired)?
For a plain-language explanation of Wrist drop (acquired), ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about Wrist drop (acquired)" 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 ↗