All ICD10 Codes

M21.9

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Unspecified acquired deformity of limb and hand

Use a more specific code (1 billable, 5 non-billable)
M21.90Unspecified acquired deformity of unspecified limbM21.92Unspecified acquired deformity of upper armhas subcodesM21.93Unspecified acquired deformity of forearmhas subcodesM21.94Unspecified acquired deformity of handhas subcodesM21.95Unspecified acquired deformity of thighhas subcodesM21.96Unspecified acquired deformity of lower leghas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).
General instructions are available for the parent sections:
View CH13 NotesView M20-M25 NotesView M21 Notes

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M20-M25Other joint disorders (M20-M25)
M21Other acquired deformities of limbs
M21.9Unspecified acquired deformity of limb and handNot billable
M21.90Unspecified acquired deformity of unspecified limbBillable
M21.92Unspecified acquired deformity of upper armSubcodes
M21.93Unspecified acquired deformity of forearmSubcodes
M21.94Unspecified acquired deformity of handSubcodes
M21.95Unspecified acquired deformity of thighSubcodes
M21.96Unspecified acquired deformity of lower legSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M21.9:

categoryM21
Other acquired deformities of limbs
View context instructions
blockM20-M25
Other joint disorders (M20-M25)
View context instructions
chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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