A50.5 vs K00.2
A50.5 (Other late congenital syphilis, symptomatic) compared with K00.2 (Abnormalities of size and form of teeth), 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. K00.2 carries an Excludes1 note covering A50.5: “abnormalities of teeth due to congenital syphilis (A50.5)”
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
| A50.5Other late congenital syphilis, symptomatic | K00.2Abnormalities of size and form of teeth | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99) | K00-K95 — Diseases of the Digestive System (K00-K95) |
| Definition | Other late congenital syphilis, symptomatic is a non-billable ICD-10-CM category code (A50.5). | Abnormalities of size and form of teeth is a billable ICD-10-CM diagnosis code (K00.2). |
| Includes | Any congenital syphilitic condition specified as late or manifest two years or more after birth. | Concrescence of teeth Fusion of teeth Gemination of teeth Dens evaginatus |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources