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Compare/K13 vs K14

K13 vs K14

K13 (Other diseases of lip and oral mucosa) compared with K14 (Diseases of tongue), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. K13 carries an Excludes2 note covering K14: “diseases of tongue (K14.-)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

K13Other diseases of lip and oral mucosaK14Diseases of tongue
Billing statusNon-billable header

Report instead: K13.0, K13.1, K13.21, K13.22, K13.23

Non-billable header

Report instead: K14.0, K14.1, K14.2, K14.3, K14.4

ClassificationK00-K95 — Diseases of the Digestive System (K00-K95)K00-K95 — Diseases of the Digestive System (K00-K95)
DefinitionOther diseases of lip and oral mucosa is a non-billable ICD-10-CM category code (K13).Diseases of tongue is a non-billable ICD-10-CM category code (K14).
Includes
epithelial disturbances of tongue
—
Use additional code
code to identify:
alcohol abuse and dependence (F10.-)
exposure to environmental tobacco smoke (Z77.22)
code to identify:
alcohol abuse and dependence (F10.-)
exposure to environmental tobacco smoke (Z77.22)
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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