What is the ICD-10 (International Classification of Diseases, 10th Revision) code for a screening mammogram order?

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ICD-10 Code for Screening Mammogram Order

The appropriate ICD-10 code for a screening mammogram order is Z12.31 (Encounter for screening mammogram for malignant neoplasm of breast). 1

Coding Guidelines for Screening Mammography

  • Z12.31 is the specific ICD-10 code designated for screening mammography encounters when there are no symptoms, signs, or history of breast disease 1
  • This code should be used when ordering routine screening mammograms for asymptomatic patients 1
  • The code indicates that the purpose of the encounter is for preventive screening rather than diagnostic evaluation 1

Screening vs. Diagnostic Mammography Coding

  • Screening mammography (Z12.31) is performed on asymptomatic patients with no breast complaints or abnormalities 1
  • Diagnostic mammography requires different coding based on the specific indication (symptoms, follow-up of abnormality, etc.) 1
  • If the patient has a personal history of breast cancer, use Z85.3 (Personal history of malignant neoplasm of breast) as a secondary code 1

Age-Based Screening Recommendations and Coding

  • For women aged 40 and older, annual screening mammography is recommended by many organizations, and Z12.31 would be the appropriate code 1
  • For high-risk women under 40 who qualify for screening, Z12.31 would still be the appropriate code, though additional risk factor codes may be beneficial 1
  • For transgender patients meeting screening criteria, Z12.31 is still the appropriate code for breast cancer screening 1

Risk-Based Coding Considerations

  • For patients with increased risk factors, consider adding appropriate secondary codes:
    • Z80.3 (Family history of malignant neoplasm of breast) for patients with family history 1
    • Z84.89 (Family history of other specified conditions) for genetic predisposition 1
    • Z15.01 (Genetic susceptibility to malignant neoplasm of breast) for patients with known genetic mutations 1

Common Coding Pitfalls to Avoid

  • Do not use diagnostic codes (such as N60-N65 breast disorders) for screening examinations 1
  • Avoid using general screening code Z12.39 (Encounter for other screening for malignant neoplasm of breast) when the more specific Z12.31 is appropriate 1
  • Do not use Z01.89 (Encounter for other specified special examinations) for breast cancer screening as it is too general 1

Follow-Up Coding After Screening

  • If a screening mammogram reveals an abnormality requiring additional imaging, the subsequent visit should be coded with the appropriate diagnostic code rather than Z12.31 1
  • For short-interval follow-up of probably benign findings (BI-RADS 3), use the appropriate diagnostic code rather than the screening code 1

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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