ICD10BillableValid for clinical use

ICD-10 Code Z86.03: Personal history of neoplasm of uncertain behavior

Z86.03 is a billable ICD-10 diagnosis code used to classify Personal history of neoplasm of uncertain behavior in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Factors influencing health status and contact with health services (Z00-Z99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Factors influencing health status and contact with health services (Z00-Z99).

When is it used?

  • May be used when a clinician documents personal history of neoplasm of uncertain behavior in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
21Factors influencing health status and contact with health services (Z00-Z99)
block
Z77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
category
Z86Personal history of certain other diseases
category
Z86.0Personal history of in-situ and benign neoplasms and neoplasms of uncertain behavior
currentZ86.0

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

General PhysicianOncologist

Coverage-related procedures and services

CPT 19030high
INJECTION PROCEDURE ONLY FOR MAMMARY DUCTOGRAM OR GALACTOGRAM
Source: CMS coverage guidance
HCPCS C8906high
MAGNETIC RESONANCE IMAGING WITH CONTRAST, BREAST; BILATERAL
Source: CMS coverage guidance
HCPCS C8903high
MAGNETIC RESONANCE IMAGING WITH CONTRAST, BREAST; UNILATERAL
Source: CMS coverage guidance
HCPCS C8908high
MAGNETIC RESONANCE IMAGING WITHOUT CONTRAST FOLLOWED BY WITH CONTRAST, BREAST; BILATERAL
Source: CMS coverage guidance
HCPCS C8905high
MAGNETIC RESONANCE IMAGING WITHOUT CONTRAST FOLLOWED BY WITH CONTRAST, BREAST; UNILATERAL
Source: CMS coverage guidance
CPT 77049high
MAGNETIC RESONANCE IMAGING, BREAST, WITHOUT AND WITH CONTRAST MATERIAL(S), INCLUDING COMPUTER-AIDED DETECTION (CAD REAL-TIME LESION DETECTION, CHARACTERIZATION AND PHARMACOKINETIC ANALYSIS), WHEN PERFORMED; BILATERAL
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Personal history of neoplasm of uncertain behavior

Frequently asked questions

Code details

CodeZ86.03
SystemICD10
Display namePersonal history of neoplasm of uncertain behavior
ChapterFactors influencing health status and contact with health services (Z00-Z99)
BlockPersons with potential health hazards related to family and personal history and certain conditions influencing health status

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
History

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.