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v1.0.0
ICD-10 Guide
DiagnosesRoutine Mammogram

Routine Mammogram

ICD-10 Coding for Routine Mammogram(Z12.31, Z85.3)

PRIMARY SPECIALTYRadiology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Routine Mammogram?
Essential facts and insights about Routine Mammogram

Key Clinical Considerations:

  • Asymptomatic women aged 40 and older
  • Routine screening for breast cancer
  • No palpable breast masses or abnormalities

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient's age and risk factors
  • Date of last mammogram and results
  • Indication for the mammogram (routine screening)

Coding Guidelines

Usage Guidelines & Examples

  • Use Z12.31 for routine screening; use N63 for abnormal findings.
  • Common errors include using diagnostic codes for routine screenings.

Code Exclusions

Important Exclusions

  • Patients with a history of breast cancer
  • Diagnostic mammograms for symptomatic patients

Related ICD-10 Codes

Primary Codes
Z12.31
Encounter for screening mammogram for malignant neoplasm of breast
Ancillary Codes
+77063
Differential Codes
R92.8

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Radiology

Specialty Applications

  • Women aged 40 and older
  • Outpatient radiology settings

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What are the documentation requirements?

Document patient's age, risk factors, and previous mammogram results.

What are the billing considerations?

Ensure correct coding for screening vs diagnostic mammograms.