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C00.4 vs Z85.819

C00.4 (Malignant neoplasm of lower lip, inner aspect) compared with Z85.819 (Personal history of malignant neoplasm of unspecified site of lip, oral cavity, and pharynx), from the official CMS tabular data. Z85.819 is the personal-history/screening code for the active disease C00.4 names.

Relationship

Review

Condition lifecycle relationship

Z85.819
Personal history of malignant neoplasm of unspecified site of lip, oral cavity, and pharynx
↔
C00.4
Malignant neoplasm of lower lip, inner aspect

Personal-history or screening code versus the active disease.

Active disease for this site (lip)

A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code for the same site.

Source: CMS Table of Neoplasms (site match derived from the code title)

Can these codes be reported together?

History or screening versus active disease. Z85.819 is the personal-history or screening code for the active disease C00.4 names.

Site match derived from the code’s own title against the CMS Table of Neoplasms. A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code.

Side by side

C00.4Malignant neoplasm of lower lip, inner aspectZ85.819Personal history of malignant neoplasm of unspecified site of lip, oral cavity, and pharynx
Billing statusBillableBillable
ClassificationC00-D49 — Neoplasms (C00-D49)Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)
DefinitionMalignant neoplasm of lower lip, inner aspect is a billable ICD-10-CM diagnosis code (C00.4).Personal history of malignant neoplasm of unspecified site of lip, oral cavity, and pharynx is a billable ICD-10-CM diagnosis code (Z85.819).
Includes
Malignant neoplasm of buccal aspect of lower lip
Malignant neoplasm of frenulum of lower lip
Malignant neoplasm of mucosa of lower lip
Malignant neoplasm of oral aspect of lower lip
—
Use additional code
code to identify:
alcohol abuse and dependence (F10.-)
history of tobacco dependence (Z87.891)
code to identify:
alcohol use and dependence (F10.-)
exposure to environmental tobacco smoke (Z77.22)
Code first—
any follow-up examination after treatment of malignant neoplasm (Z08)
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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