M05.0 vs M08.9A
M05.0 (Felty's syndrome) compared with M08.9A (Juvenile arthritis, unspecified, other specified site), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. M05.0 carries an Excludes1 note covering M08.9A: “juvenile rheumatoid arthritis (M08.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. M08.9A carries an Excludes1 note covering M05.0: “Felty's syndrome (M05.0)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| M05.0Felty's syndrome | M08.9AJuvenile arthritis, unspecified, other specified site | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| 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 | Felty's syndrome is a non-billable ICD-10-CM category code (M05.0). | Juvenile arthritis, unspecified, other specified site is a billable ICD-10-CM diagnosis code (M08.9A). |
| Includes | Rheumatoid arthritis with splenoadenomegaly and leukopenia | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources