M21.3

Wrist or foot drop (acquired)

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027

SourceCMS ICD-10-CM order file

ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODE	DESCRIPTION	TYPE
M21.33	Wrist drop (acquired)	Category
M21.331	Wrist drop, right wrist	Billable
M21.332	Wrist drop, left wrist	Billable
M21.339	Wrist drop, unspecified wrist	Billable
M21.37	Foot drop (acquired)	Category
M21.371	Foot drop, right foot	Billable
M21.372	Foot drop, left foot	Billable
M21.379	Foot drop, unspecified foot	Billable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.