M19.90

Billable

ChapterM00–M99

Ranksubcategory

Official Description

Unspecified osteoarthritis, unspecified site

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

Instructional Notes

Includes

Arthrosis NOS
Arthritis NOS
Osteoarthritis NOS

General instructions are available for the parent sections:

View CH13 Notes View M15-M19 Notes View M19 Notes

Clinical Hierarchy

CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)

M15-M19Osteoarthritis (M15-M19)

M19Other and unspecified osteoarthritis

M19.9Osteoarthritis, unspecified site

M19.90Unspecified osteoarthritis, unspecified site

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M19.90:

categoryM19

Other and unspecified osteoarthritis

View context instructions

blockM15-M19

Osteoarthritis (M15-M19)

View context instructions

chapterCH13

Diseases of the musculoskeletal system and connective tissue (M00-M99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to M19.90. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

4 raw paths

Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)1 unique routes

Direct index entry→M19.90

Arthrosis (deformans) (degenerative) (localized)1 unique routes

Direct index entry→M19.90

Osteoarthritis1 unique routes

Direct index entry→M19.90

Osteoarthropathy (hypertrophic)1 unique routes

Direct index entry→M19.90