Is ICD-10-CM code M19 billable?

No, M19 (Other and unspecified osteoarthritis) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code M19 belong to?

M19 belongs to Chapter 13 of the ICD-10-CM tabular list: M00–M99 (Diseases of the Musculoskeletal System and Connective Tissue).

M19

Non-Billable

ChapterM00–M99

Rankcategory

Description

Other and unspecified osteoarthritis

About ICD-10-CM code M19

The ICD-10-CM tabular list places Other and unspecified osteoarthritis at code M19, inside M00-M99 Diseases of the Musculoskeletal System and Connective Tissue, within Osteoarthritis (M15-M19). You should not submit this code on claims since it lacks billing specificity, use a child code.

Use a more specific code (0 billable, 4 non-billable)

M19.0Primary osteoarthritis of other jointshas subcodes M19.1Post-traumatic osteoarthritis of other jointshas subcodes M19.2Secondary osteoarthritis of other jointshas subcodes M19.9Osteoarthritis, unspecified sitehas subcodes

Metadata & Insights

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

CH13 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

arthropathic psoriasis (L40.5-)
certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
compartment syndrome (traumatic) (T79.A-)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

M15-M19 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

osteoarthritis of spine (M47.-)

Instructional Notes

Excludes1(Not coded here. Use a different code.)

polyarthritis (M15.-)

Excludes2(Not included here. Code separately if applicable.)

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

Clinical Hierarchy

BillableHas subcodes

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

M15-M19Osteoarthritis (M15-M19)

M19Other and unspecified osteoarthritisNot billable

M19.0Primary osteoarthritis of other jointsSubcodes

M19.1Post-traumatic osteoarthritis of other jointsSubcodes

M19.2Secondary osteoarthritis of other jointsSubcodes

M19.9Osteoarthritis, unspecified siteSubcodes

Applicable Ancestor Context

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

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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