U.S. ICD-10-CM · FY 2027

M19 ICD-10-CM Code: Other and unspecified osteoarthritis

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

M19

Other and unspecified osteoarthritis

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where M19 sits

  1. 1

    Chapter 13

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

  2. 2

    Section

    Osteoarthritis (M15-M19)

  3. 3

    Category M19

    Other and unspecified osteoarthritis

  4. 4

    Code M19

    Other and unspecified osteoarthritis

More specific choices

Codes under M19

M19 is a non-billable category. Choose the child code that best matches the documented diagnosis.

M19.0

Primary osteoarthritis of other joints

M19.1

Post-traumatic osteoarthritis of other joints

M19.2

Secondary osteoarthritis of other joints

M19.9

Osteoarthritis, unspecified site

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for M19.

Code first

No “code first” instruction is listed for M19.

Use additional code

No “use additional code” instruction is listed for M19.

Excludes1

Conditions that should not be reported together with this code.

  • polyarthritis (M15.-)

Excludes2

Conditions not included here that may be reported separately when present.

  • arthrosis of spine (M47.-)
  • hallux rigidus (M20.2)
  • osteoarthritis of spine (M47.-)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code M19 mean?

M19 is the FY 2027 U.S. ICD-10-CM code for “Other and unspecified osteoarthritis.”

Is M19 a billable or specific ICD-10-CM code?

No. M19 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is M19 located in ICD-10-CM?

M19 is listed in Chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99), within Osteoarthritis (M15-M19) (M15–M19), under category M19, Other and unspecified osteoarthritis.

What coding notes are listed for M19?

No inclusion terms are listed for M19 in this reference record. No code-first instruction is listed. Excludes1 notes: polyarthritis (M15.-). Excludes2 notes: arthrosis of spine (M47.-); hallux rigidus (M20.2); osteoarthritis of spine (M47.-).

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