All ICD10 Codes

M21.7

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Unequal limb length (acquired)

Use a more specific code (1 billable, 4 non-billable)
M21.70Unequal limb length (acquired), unspecified siteM21.72Unequal limb length (acquired), humerushas subcodesM21.73Unequal limb length (acquired), ulna and radiushas subcodesM21.75Unequal limb length (acquired), femurhas subcodesM21.76Unequal limb length (acquired), tibia and fibulahas 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
M21.7Unequal limb length (acquired)Not billable
M21.70Unequal limb length (acquired), unspecified siteBillable
M21.72Unequal limb length (acquired), humerusSubcodes
M21.73Unequal limb length (acquired), ulna and radiusSubcodes
M21.75Unequal limb length (acquired), femurSubcodes
M21.76Unequal limb length (acquired), tibia and fibulaSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M21.7:

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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