Z85 Personal history of malignant neoplasm

The ICD-10-CM code for Personal history of malignant neoplasm is Z85 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

21: Factors influencing health status and contact with health services (Z00-Z99)

Section

Z77-Z99: Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)

Category Z85

80 codes (60 billable)

FY2026 Status

Stable since FY2024

Official Coding Guidelines

Primary malignancy excised—use Z85 category (truncated)

d. Primary malignancy previously excised When a primary malignancy has been previously excised or eradicated from its site and there is no further treatment directed to that site and there is no evidence of any existing primary malignancy at that site, a code from category Z85,

Personal history of malignant neoplasm (Z85) sequencing

Personal history of malignant neoplasm, should be used to indicate the former site of the malignancy. Any mention of extension, invasion, or metastasis to another site is coded as a secondary malignant neoplasm to that site. The secondary site may be the principal or first-listed diagnosis with the Z85 code used as a secondary code. See section I.C.2.t. Secondary malignant neoplasm of lymphoid tissue.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool