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Oncology & Hematology Coding Alert

ICD-10-CM: C50.- Range Will Replace Both 174.x and 175.x


- Published on Wed, Nov 09, 2011

Prepare for more specific codes for male breast cancer patients.

ICD-9-CM codes for breast neoplasms are fairly specific, but your ICD-10-CM options kick the detail requirements up another notch. Here's the lowdown on how ICD-10-CM incorporates additional anatomic information and increases the data needed when you code for male patients.

ICD-9-CM coding rules: Using ICD-9-CM 2011, your coding options for primary breast neoplasms differ based on sex.

For female patients you use 174.x (Malignant neoplasm of female breast), and your fourth digit options relate to anatomic location:

  • 174.0, ... nipple and areola
  • 174.1, ... central portion
  • 174.2, ... upper-inner quadrant
  • 174.3, ... lower-inner quadrant
  • 174.4, ... upper-outer quadrant
  • 174.5, ... lower-outer quadrant
  • 174.6, ... axillary tail
  • 174.8, ... other specified sites of female breast
  • 174.9, ... breast (female), unspecified.

For male patients, you use 175.x (Male neoplasm of male breast). The fourth digit again relates to anatomic site, but the list is much shorter:

  • 175.0, ...nipple and areola
  • 175.9, ... other and unspecified sites of male breast.

ICD-9-CM instructions for both 174.x and 175.x tell you [...]

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