M19 vs M47

M19 (Other and unspecified osteoarthritis) compared with M47 (Spondylosis), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. M19 carries an Excludes2 note covering M47: “arthrosis of spine (M47.-)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Yes, when both are documented. M19 carries an Excludes2 note covering M47: “osteoarthritis of spine (M47.-)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

	M19Other and unspecified osteoarthritis	M47Spondylosis
Billing status	Non-billable header Report instead: M19.011, M19.012, M19.019, M19.021, M19.022	Non-billable header Report instead: M47.011, M47.012, M47.013, M47.014, M47.015
Classification	M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)	M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)
Definition	Other and unspecified osteoarthritis is a non-billable ICD-10-CM category code (M19).	Spondylosis is a non-billable ICD-10-CM category code (M47).
Includes	—	arthrosis or osteoarthritis of spine degeneration of facet joints

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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources