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C00.6 vs Z85.81

C00.6 (Malignant neoplasm of commissure of lip, unspecified) compared with Z85.81 (Personal history of malignant neoplasm of lip, oral cavity, and pharynx), from the official CMS tabular data. Z85.81 is the personal-history/screening code for the active disease C00.6 names. MedCoder-derived

Relationship

Review

Condition lifecycle relationship

Z85.81
Personal history of malignant neoplasm of lip, oral cavity, and pharynx
↔
C00.6
Malignant neoplasm of commissure of lip, unspecified

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. Z85.81 is the personal-history or screening code for the active disease C00.6 names.

Site match derived from the code’s own title against the CMS/CDC 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

C00.6Malignant neoplasm of commissure of lip, unspecifiedZ85.81Personal history of malignant neoplasm of lip, oral cavity, and pharynx
Billing statusBillableNon-billable header

Report instead: Z85.810, Z85.818, Z85.819

ClassificationC00-D49 — Neoplasms (C00-D49)Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)
DefinitionMalignant neoplasm of commissure of lip, unspecified is a billable ICD-10-CM diagnosis code (C00.6).Personal history of malignant neoplasm of lip, oral cavity, and pharynx is a non-billable ICD-10-CM category code (Z85.81).
Includes—
Conditions classifiable to C00-C14
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