Mammosite Radiation Therapy System

Surgeons at our hospital performed a new procedure, MammoSite catheter insertion for a patient with non-invasive carcinoma of the upper outer quadrant of the breast. The patient presented to the hospital status post lumpectomy. An incision of the breast was done and a catheter was placed for delivery of internal radiation to the tissue near the lumpectomy site. During another encounter, radioactive seeds were inserted through the catheter. How should the insertion of the Mammosite device be coded when internal radiation is not done? ...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This premium article addresses a breast cancer-related procedure scenario involving MammoSite catheter placement and subsequent internal radiation treatment. It is intended for coders and billing professionals who need to understand the general coding context, diagnosis reporting, and how the article frames procedure coding for different encounters related to the therapy process.

Why This Topic Matters

Breast radiation therapy cases can involve multiple encounters and distinct procedural steps, so accurate coding depends on understanding how the service is documented across visits. This article helps readers interpret the coding context for a MammoSite-related hospital scenario.

Article Sections

  1. Clinical scenario and coding question

    Introduces a breast cancer treatment encounter involving MammoSite catheter placement and a follow-up radiation-related service. The section frames the coding question for the hospital documentation scenario.

  2. Diagnosis and procedure guidance

    Addresses the diagnosis context and the procedure reporting approach described for the encounter when internal radiation is not performed at the same time. It presents the article’s general coding focus for the staged treatment process.

What You Will Learn

  • The clinical context for MammoSite-related breast radiation therapy coding
  • How the article frames diagnosis reporting for a breast cancer encounter
  • How staged procedure encounters are discussed in relation to catheter placement and internal radiation services
  • What types of coding considerations arise when radiation is not delivered during the initial encounter

Who Should Read This

  • Medical coders
  • Billing specialists
  • Revenue cycle staff
  • Compliance professionals
  • Physician documentation staff

Codes Discussed

  • ICD-9-CM: 174.4
  • ICD-9-CM: 85.0

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