C13.1 (Malignant neoplasm of aryepiglottic fold, hypopharyngeal aspect) compared with D10.7 (Benign neoplasm of hypopharynx), from the official CMS tabular data. C13.1 and D10.7 name the same anatomical site (aryepiglottic fold) with a different neoplasm behavior.
Same anatomical site, different neoplasm behavior.
Same site — benign neoplasm (aryepiglottic fold)
The behavior documented for the site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column of the neoplasm table, and therefore which code, applies.
Source: CMS Table of Neoplasms
Same site, different neoplasm behavior. C13.1 and D10.7 name the same anatomical site (aryepiglottic fold) with a different neoplasm behavior.
From the CMS Table of Neoplasms: the behavior documented for that site — malignant primary, secondary, carcinoma in situ, benign, uncertain or unspecified — decides which column, and therefore which code, applies.
| C13.1Malignant neoplasm of aryepiglottic fold, hypopharyngeal aspect | D10.7Benign neoplasm of hypopharynx | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms | C00-D49 — Neoplasms |
| Definition | Malignant neoplasm of aryepiglottic fold, hypopharyngeal aspect is a billable ICD-10-CM diagnosis code (C13.1). | Benign neoplasm of hypopharynx is a billable ICD-10-CM diagnosis code (D10.7). |
| Includes | Malignant neoplasm of aryepiglottic fold, marginal zone Malignant neoplasm of aryepiglottic fold NOS Malignant neoplasm of interarytenoid fold, marginal zone Malignant neoplasm of interarytenoid fold NOS | — |
| Use additional code | code to identify: exposure to environmental tobacco smoke (Z77.22) exposure to tobacco smoke in the perinatal period (P96.81) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources