Z86.03 Personal history of neoplasm of uncertain behavior

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applies from Z86 Personal history of certain other diseases

Code first

• any follow-up examination after treatment (Z09)

Applies from Z86.0 Personal history of in-situ and benign neoplasms and neoplasms of uncertain behavior

Excludes2 (not included here)

• personal history of malignant neoplasms (Z85.-)

MS-DRG index

Defines the logic of DRG(s) 951 in MDC 23.

Approximate ICD-9-CM (GEMs)

• V13.89 Personal history of other specified diseases (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Unacceptable principal diagnosis: These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.

Code annotations containing back-references to Z86.03

Back-references to Z86

• Use Additional: Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm ("code to identify any applicable history of disease code (Z86.-, Z87.-)")

Diagnosis Index entries for Z86.03

• History › personal (of) › neoplasm › uncertain behavior

Nearby codes

• Z86.0102 Personal history of hyperplastic colon polyps
• Z86.0109 Personal history of other colon polyps
• Z86.011 Personal history of benign neoplasm of the brain
• Z86.012 Personal history of benign carcinoid tumor
• Z86.018 Personal history of other benign neoplasm
• Z86.03 Personal history of neoplasm of uncertain behavior (this code)
• Z86.1 Personal history of infectious and parasitic diseases
• Z86.11 Personal history of tuberculosis
• Z86.12 Personal history of poliomyelitis
• Z86.13 Personal history of malaria
• Z86.14 Personal history of Methicillin resistant Staphylococcus aureus infection