M43.2 vs Z98.1
M43.2 (Fusion of spine) compared with Z98.1 (Arthrodesis status), 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. M43.2 carries an Excludes2 note covering Z98.1: “arthrodesis status (Z98.1)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M43.2Fusion of spine | Z98.1Arthrodesis status | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Fusion of spine is a non-billable ICD-10-CM category code (M43.2). | Arthrodesis status is a billable ICD-10-CM diagnosis code (Z98.1). |
| Includes | Ankylosis of spinal joint | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources