A52.11 vs M90
A52.11 (Tabes dorsalis) compared with M90 (Osteopathies in diseases classified elsewhere), 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. M90 carries an Excludes1 note covering A52.11: “neurogenic syphilis (A52.11)”
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
| A52.11Tabes dorsalis | M90Osteopathies in diseases classified elsewhere | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Tabes dorsalis is a billable ICD-10-CM diagnosis code (A52.11). | Osteopathies in diseases classified elsewhere is a non-billable ICD-10-CM category code (M90). |
| Includes | Locomotor ataxia (progressive) Tabetic neurosyphilis | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources