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C14.8 vs Z85.818

C14.8 (Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx) compared with Z85.818 (Personal history of malignant neoplasm of other sites of lip, oral cavity, and pharynx), from the official CMS tabular data. Z85.818 is the personal-history/screening code for the active disease C14.8 names. MedCoder-derived

Relationship

Review

Condition lifecycle relationship

Z85.818
Personal history of malignant neoplasm of other sites of lip, oral cavity, and pharynx
↔
C14.8
Malignant neoplasm of overlapping sites of lip, oral cavity and pharynx

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. Z85.818 is the personal-history or screening code for the active disease C14.8 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

C14.8Malignant neoplasm of overlapping sites of lip, oral cavity and pharynxZ85.818Personal history of malignant neoplasm of other sites 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 overlapping sites of lip, oral cavity and pharynx is a billable ICD-10-CM diagnosis code (C14.8).Personal history of malignant neoplasm of other sites of lip, oral cavity, and pharynx is a billable ICD-10-CM diagnosis code (Z85.818).
Includes
Primary malignant neoplasm of two or more contiguous sites of lip, oral cavity and pharynx
—
Use additional code
code to identify:
alcohol abuse and dependence (F10.-)
exposure to environmental tobacco smoke (Z77.22)
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