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D00.00 vs D37.04

D00.00 (Carcinoma in situ of oral cavity, unspecified site) compared with D37.04 (Neoplasm of uncertain behavior of the minor salivary glands), from the official CMS tabular data. D00.00 and D37.04 name the same anatomical site (salivary gland or duct) with a different neoplasm behavior. MedCoder-derived

Relationship

Informational

Neoplasm table relationship

D00.00
Carcinoma in situ of oral cavity, unspecified site
↔
D37.04
Neoplasm of uncertain behavior of the minor salivary glands

Same anatomical site, different neoplasm behavior.

Same site — uncertain behavior (salivary gland or duct)

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

Can these codes be reported together?

Same site, different neoplasm behavior. D00.00 and D37.04 name the same anatomical site (salivary gland or duct) with a different neoplasm behavior.

From the CMS/CDC 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.

Side by side

D00.00Carcinoma in situ of oral cavity, unspecified siteD37.04Neoplasm of uncertain behavior of the minor salivary glands
Billing statusBillableBillable
ClassificationC00-D49 — NeoplasmsC00-D49 — Neoplasms
DefinitionCarcinoma in situ of oral cavity, unspecified site is a billable ICD-10-CM diagnosis code (D00.00).Neoplasm of uncertain behavior of the minor salivary glands is a billable ICD-10-CM diagnosis code (D37.04).
Includes
Bowen's disease
erythroplasia
grade III intraepithelial neoplasia
Queyrat's erythroplasia
Neoplasm of uncertain behavior of submucosal salivary glands of lip
Neoplasm of uncertain behavior of submucosal salivary glands of cheek
Neoplasm of uncertain behavior of submucosal salivary glands of hard palate
Neoplasm of uncertain behavior of submucosal salivary glands of soft palate
Use additional code
code to identify:
exposure to environmental tobacco smoke (Z77.22)
exposure to tobacco smoke in the perinatal period (P96.81)
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources