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ICD-10 Coding for History of Mastectomy(Z85.3, Z90.1-)

Complete ICD-10-CM coding and documentation guide for History of Mastectomy. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Post-Mastectomy StatusMastectomy History

Related ICD-10 Code Ranges

Complete code families applicable to History of Mastectomy

Z85.3Primary Range

Personal history of malignant neoplasm of breast

Used for patients with a history of breast cancer who have completed treatment and are under surveillance.

Acquired absence of breast

Indicates the absence of breast tissue post-mastectomy, specifying laterality.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
Z85.3Personal history of malignant neoplasm of breastUse when the patient has completed cancer treatment and is under surveillance.
  • Pathology reports confirming no residual disease
  • Imaging results showing no evidence of disease
  • Completion of active treatment
Z90.1-Acquired absence of breastUse to indicate the absence of breast tissue post-mastectomy.
  • Surgical history indicating mastectomy
  • Documentation of laterality

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for history of mastectomy

Essential facts and insights about History of Mastectomy

Z85.3 is used for patients with a history of breast cancer who have completed treatment and are under surveillance.

Primary ICD-10-CM Codes for history of mastectomy

Personal history of malignant neoplasm of breast
Billable Code

Decision Criteria

clinical Criteria

  • Patient has completed all cancer treatments and shows no evidence of disease.

Applicable To

  • History of breast cancer

Excludes

  • Current breast cancer (C50.-)

Clinical Validation Requirements

  • Pathology reports confirming no residual disease
  • Imaging results showing no evidence of disease
  • Completion of active treatment

Code-Specific Risks

  • Incorrectly used with active treatment codes

Coding Notes

  • Ensure documentation specifies no current evidence of disease.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Encounter for follow-up exam after completed treatment for malignant neoplasm

Z08
Use alongside Z85.3 for surveillance visits.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Malignant neoplasm of breast

C50.-
Use C50.- if the patient is still undergoing active treatment.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting History of Mastectomy to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code Z85.3.

Impact

Clinical: Incomplete patient records, Regulatory: Non-compliance with coding standards, Financial: Potential claim denials

Mitigation Strategy

Always specify laterality, Review surgical history

Impact

Reimbursement: Incorrect DRG assignment, Compliance: Non-compliance with coding guidelines, Data Quality: Inaccurate patient records

Mitigation Strategy

Use C50.- until all treatments are completed.

Impact

Using Z85.3 when active treatment is ongoing

Mitigation Strategy

Verify treatment status before coding

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for History of Mastectomy, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for History of Mastectomy

Use these documentation templates to ensure complete and accurate documentation for History of Mastectomy. These templates include all required elements for proper coding and billing.

Oncology Surveillance Visit

Specialty: Oncology

Required Elements

  • Patient history
  • Treatment completion date
  • Current surveillance status

Example Documentation

Patient completed chemotherapy in 2023, currently under surveillance with no evidence of disease.

Examples: Poor vs. Good Documentation

Poor Documentation Example
History of breast cancer.
Good Documentation Example
Completed chemotherapy in 2023, no evidence of disease on recent imaging.
Explanation
The good example specifies treatment completion and current disease status.

Need help with ICD-10 coding for History of Mastectomy? Ask your questions below.

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