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Z90.10
ICD-10-CM
History of Mastectomy

Find comprehensive information on documenting a history of mastectomy in medical records. This resource covers clinical documentation requirements, ICD-10 codes for history of mastectomy (Z90.11, Z90.12), SNOMED CT codes, and best practices for accurate healthcare coding and billing. Learn about different types of mastectomies, including radical, modified radical, and prophylactic mastectomy, and their implications for patient care and medical coding. Improve your understanding of post-mastectomy care, reconstructive surgery documentation, and related diagnoses for optimal clinical documentation integrity.

Also known as

Post-Mastectomy Status
Mastectomy History

Diagnosis Snapshot

Key Facts
  • Definition : Surgical removal of breast tissue, typically for breast cancer treatment or prevention.
  • Clinical Signs : Absence of breast tissue, possible scarring, skin changes, altered sensation.
  • Common Settings : Hospital surgical settings, outpatient surgical centers, breast cancer clinics.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC Z90.10 Coding
Z90-Z99

Factors influencing health status

Personal history of medical treatment.

Z85-Z87

Personal history of malignant neoplasm

History of malignant neoplasms, including breast.

C50-C50

Malignant neoplasm of breast

While not history, used for staging/treatment data.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the mastectomy status current?

Code Comparison

Related Codes Comparison

When to use each related code

Description
History of Mastectomy
History of Lymphedema post-Mastectomy
History of Post-Mastectomy Pain Syndrome

Documentation Best Practices

Documentation Checklist
  • Mastectomy type (e.g., radical, modified)
  • Date of procedure documented
  • Laterality (left, right, bilateral)
  • Reason for mastectomy (diagnosis)
  • Lymph node involvement details

Coding and Audit Risks

Common Risks
  • Laterality Coding

    Missing or incorrect laterality (right, left, bilateral) for the mastectomy procedure can lead to inaccurate coding and reimbursement.

  • Prophylactic Mastectomy

    Coding prophylactic mastectomies requires specific Z codes and may be missed if documentation lacks clarity about risk factors.

  • History vs. Status Post

    Distinguishing between history of mastectomy and status post mastectomy requires precise documentation to ensure correct coding for current encounters.

Mitigation Tips

Best Practices
  • Document mastectomy type, laterality, date, & reason.
  • Code Z85.3 after complete remission, Z90.11 during active treatment.
  • Query physician for clarity if documentation is vague.
  • Ensure proper sequencing: primary malignancy then Z code.
  • Check medical necessity for procedures related to history.

Clinical Decision Support

Checklist
  • Confirm mastectomy type (partial, total, radical)
  • Verify laterality (left, right, bilateral)
  • Check date of procedure in operative report
  • Document reason for mastectomy (prophylactic, cancer)
  • Review pathology report if applicable

Reimbursement and Quality Metrics

Impact Summary
  • Mastectomy coding accuracy impacts reimbursement for reconstruction procedures.
  • History of mastectomy diagnosis affects quality metrics for cancer survivorship programs.
  • Proper ICD-10 coding for mastectomy history crucial for accurate hospital reporting.
  • Mastectomy status coding impacts risk adjustment models and value-based care reimbursement.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes. Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code Z90.11, Z90.12
  • Laterality crucial: ICD-10-CM
  • Document type/timing

Documentation Templates

Patient presents with a history of mastectomy.  The patient reports a previous surgical removal of breast tissue due to breast cancer.  Documentation of the specific type of mastectomy performed is crucial for accurate medical coding and billing, including whether it was a unilateral or bilateral mastectomy, and whether it involved a simple mastectomy, modified radical mastectomy, radical mastectomy, skin-sparing mastectomy, or nipple-sparing mastectomy.  The date of the mastectomy procedure, the surgeon's name, and the facility where the surgery took place should be documented.  Information regarding any reconstructive surgery following the mastectomy, such as breast reconstruction with implants or autologous tissue, should also be recorded.  Relevant past medical history includes the specific type of breast cancer diagnosis (e.g., ductal carcinoma in situ, invasive ductal carcinoma, lobular carcinoma in situ, invasive lobular carcinoma), stage of cancer at diagnosis, and any neoadjuvant or adjuvant therapies received, such as chemotherapy, radiation therapy, hormonal therapy, or targeted therapy.  Current symptoms, such as pain, lymphedema, or range of motion limitations, should be assessed and documented.  Physical examination findings relevant to the mastectomy site, including scar assessment, presence of seroma or hematoma, and assessment of lymph nodes, should be thoroughly documented.  Ongoing surveillance and follow-up care plans, including recommendations for mammograms, breast MRI, or other imaging studies, should be clearly outlined.  This comprehensive documentation supports accurate clinical care, medical billing, and coding for patients with a history of mastectomy.