M18.3

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Unilateral post-traumatic osteoarthritis of first carpometacarpal joint

Metadata & Insights
  • Non-billable category (requires more specific sub-code).
  • Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

Instructional Notes

Includes
  • Post-traumatic osteoarthritis of first carpometacarpal joint NOS
General instructions are available for the parent sections:

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M15-M19Osteoarthritis (M15-M19)
M18Osteoarthritis of first carpometacarpal joint
M18.3Unilateral post-traumatic osteoarthritis of first carpometacarpal jointNot billable
M18.30Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified handBillable
M18.31Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, right handBillable
M18.32Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, left handBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M18.3:

blockM15-M19
Osteoarthritis (M15-M19)
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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