Q70.3 vs Q70.4
Q70.3 (Webbed toes) compared with Q70.4 (Polysyndactyly, unspecified), 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. Q70.4 carries an Excludes1 note covering Q70.3: “specified syndactyly of hand and feet - code to specified conditions (Q70.0- -Q70.3-)”
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
| Q70.3Webbed toes | Q70.4Polysyndactyly, unspecified | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) |
| Definition | Webbed toes is a non-billable ICD-10-CM category code (Q70.3). | Polysyndactyly, unspecified is a billable ICD-10-CM diagnosis code (Q70.4). |
| Includes | Simple syndactyly of toes without synostosis | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources