All ICD10 Codes

M21.73

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Unequal limb length (acquired), ulna and radius

Use a more specific code (5 billable)
M21.731Unequal limb length (acquired), right ulnaM21.732Unequal limb length (acquired), left ulnaM21.733Unequal limb length (acquired), right radiusM21.734Unequal limb length (acquired), left radiusM21.739Unequal limb length (acquired), unspecified ulna and radius
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)
M21.73Unequal limb length (acquired), ulna and radiusNot billable
M21.731Unequal limb length (acquired), right ulnaBillable
M21.732Unequal limb length (acquired), left ulnaBillable
M21.733Unequal limb length (acquired), right radiusBillable
M21.734Unequal limb length (acquired), left radiusBillable
M21.739Unequal limb length (acquired), unspecified ulna and radiusBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M21.73:

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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