C51-C58
Medium Complexity

Malignant neoplasms of female genital organs

Primary Specialty: Gynecology
Last Updated: 2025-09-09

ICD-10 Codes (38)

38 billable
0 category headers
C52
Billable
Malignant neoplasm of vagina
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C53
Billable
Malignant neoplasm of cervix uteri
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C53.0
Billable
Malignant neoplasm of endocervix
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C53.1
Billable
Malignant neoplasm of exocervix
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C53.8
Billable
Malignant neoplasm of overlapping sites of cervix uteri
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C53.9
Billable
Malignant neoplasm of cervix uteri, unspecified
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C54
Billable
Malignant neoplasm of corpus uteri
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C54.0
Billable
Malignant neoplasm of isthmus uteri
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C54.1
Billable
Malignant neoplasm of endometrium
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C54.2
Billable
Malignant neoplasm of myometrium
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C54.3
Billable
Malignant neoplasm of fundus uteri
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C54.8
Billable
Malignant neoplasm of overlapping sites of corpus uteri
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C54.9
Billable
Malignant neoplasm of corpus uteri, unspecified
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C55
Billable
Malignant neoplasm of uterus, part unspecified
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C56
Billable
Malignant neoplasm of ovary
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C56.1
Billable
Malignant neoplasm of right ovary
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C56.2
Billable
Malignant neoplasm of left ovary
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C56.3
Billable
Malignant neoplasm of bilateral ovaries
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C56.9
Billable
Malignant neoplasm of unspecified ovary
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C57
Billable
Malignant neoplasm of other and unspecified female genital organs
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C57.0
Billable
Malignant neoplasm of fallopian tube
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C57.00
Billable
Malignant neoplasm of unspecified fallopian tube
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C57.01
Billable
Malignant neoplasm of right fallopian tube
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C57.02
Billable
Malignant neoplasm of left fallopian tube
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C57.1
Billable
Malignant neoplasm of broad ligament
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C57.10
Billable
Malignant neoplasm of unspecified broad ligament
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C57.11
Billable
Malignant neoplasm of right broad ligament
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C57.12
Billable
Malignant neoplasm of left broad ligament
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C57.2
Billable
Malignant neoplasm of round ligament
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C57.20
Billable
Malignant neoplasm of unspecified round ligament
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C57.21
Billable
Malignant neoplasm of right round ligament
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C57.22
Billable
Malignant neoplasm of left round ligament
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C57.3
Billable
Malignant neoplasm of parametrium
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C57.4
Billable
Malignant neoplasm of uterine adnexa, unspecified
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C57.7
Billable
Malignant neoplasm of other specified female genital organs
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C57.8
Billable
Malignant neoplasm of overlapping sites of female genital organs
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C57.9
Billable
Malignant neoplasm of female genital organ, unspecified
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C58
Billable
Malignant neoplasm of placenta
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Updates & Changes

FY 2026 Updates

Current Year

New Codes (2)

C02.9
Malignant neoplasm of tongue, unspecified, HPV-positive
C10.8
Malignant neoplasm of overlapping sites of oropharynx, HPV-positive

Revised Codes (2)

C01
Malignant neoplasm of base of tongue - updated to include HPV status when known
C09.9
Malignant neoplasm of tonsil, unspecified - enhanced molecular classification

Deleted Codes

No codes deleted in this range for FY 2026

Historical Changes

  • FY 2025: Routine maintenance updates with minor terminology clarifications
  • FY 2024: Enhanced specificity requirements for certain code ranges
  • FY 2023: Updated documentation guidelines for improved clarity

Upcoming Changes

  • Proposed updates pending review by Coordination and Maintenance Committee
  • Under consideration: Enhanced digital health integration codes

Implementation Guidance

  • Review all FY 2026 updates for C51-C58 codes before implementation
  • Always verify the most current codes in the ICD-10-CM manual
  • Ensure clinical documentation supports the selected diagnosis codes
  • +3 more guidance items...

Range Overview

high priority

The ICD-10 code range C51-C58 pertains to malignant neoplasms of female genital organs. This includes cancers of the vulva, vagina, cervix uteri, corpus uteri, ovary, other and unspecified female genital organs. These codes are used to document the primary site of the malignancy and are critical for accurate medical billing, epidemiological research, and tracking patient outcomes.

Key Usage Points:

  • Always code to the highest level of specificity.
  • Use additional codes to identify any functional activity.
  • Use additional code to identify any associated tobacco use.
  • For neoplasms of uncertain behavior of the female genital organs, codes in the range D39 should be used.
  • For benign neoplasms of the female genital organs, codes in the range D25-D28 should be used.

Coding Guidelines

When to Use:

  • When a patient is diagnosed with a malignant neoplasm of the female genital organs.
  • When a patient has a history of malignant neoplasm of the female genital organs.
  • When a patient is receiving treatment for a malignant neoplasm of the female genital organs.
  • When a patient is being monitored for recurrence of malignant neoplasm of the female genital organs.
  • When a patient has complications related to a malignant neoplasm of the female genital organs.

When NOT to Use:

  • When a patient has a benign or uncertain neoplasm of the female genital organs.
  • When a patient has a malignant neoplasm of a different organ system.
  • When a patient has a non-neoplastic condition of the female genital organs.
  • When a patient has a history of, but no current, malignant neoplasm of the female genital organs.
  • When a patient has a secondary or metastatic malignant neoplasm of the female genital organs.

Code Exclusions

Always cross-verify the diagnosis with the medical record before assigning a code.

Documentation Requirements

Documentation for malignant neoplasms of female genital organs should clearly indicate the type, location, and stage of the cancer. Any related complications or comorbidities should also be documented.

Clinical Information:

  • Type of malignant neoplasm
  • Location of malignant neoplasm
  • Stage of malignant neoplasm
  • Related complications or comorbidities
  • Treatment plan

Supporting Evidence:

  • Pathology reports
  • Imaging studies
  • Surgical reports
  • Oncology consultation notes
Good Documentation Example:

Patient diagnosed with Stage II squamous cell carcinoma of the cervix. Treatment plan includes radiation therapy.

Poor Documentation Example:

Patient has cervical cancer.

Common Documentation Errors:

  • Not documenting the type of malignant neoplasm
  • Not documenting the location of the malignant neoplasm
  • Not documenting the stage of the malignant neoplasm
  • Not documenting related complications or comorbidities

Range Statistics

8
Total Codes
38
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:2

Coding Complexity

Medium
Complexity Rating

Coding for malignant neoplasms of the female genital organs can be complex due to the need to accurately capture the type, location, and stage of the cancer. Additionally, these codes have multiple subcategories, which can make navigation challenging. However, with careful review of the medical record and a solid understanding of the coding guidelines, this complexity can be managed.

Key Factors:
  • Determining the type of malignant neoplasm
  • Determining the location of the malignant neoplasm
  • Determining the stage of the malignant neoplasm
  • Identifying related complications or comorbidities
  • Navigating the multiple subcategories within this code range

Specialty Focus

These codes are primarily used by gynecologists, oncologists, and surgeons. They are also used by primary care providers for patients with a history of malignant neoplasms of the female genital organs.

Primary Specialties:
Gynecology
40%
Oncology
35%
Surgery
25%
Clinical Scenarios:
  • A 45-year-old woman presents with postmenopausal bleeding. Biopsy reveals endometrial carcinoma.
  • A 35-year-old woman with a history of HPV presents with an abnormal Pap smear. Colposcopy reveals cervical carcinoma.
  • A 55-year-old woman presents with abdominal bloating and pelvic pain. CT scan reveals ovarian carcinoma.
  • A 65-year-old woman presents with a vulvar lesion. Biopsy reveals vulvar carcinoma.
  • A 75-year-old woman with a history of cervical cancer presents for follow-up. No evidence of recurrence.

Resources & References

Resources for coding malignant neoplasms of the female genital organs include the ICD-10-CM Official Guidelines for Coding and Reporting, the American Health Information Management Association (AHIMA), and the American Academy of Professional Coders (AAPC).

Official Guidelines:

  • ICD-10-CM Official Guidelines for Coding and Reporting
  • AHIMA Coding Clinic
  • AAPC Coder's Desk Reference

Clinical References:

  • National Comprehensive Cancer Network (NCCN) Guidelines
  • American Cancer Society (ACS) Guidelines

Educational Materials:

  • AHIMA ICD-10-CM Coding Workbook
  • AAPC ICD-10-CM Coding Training Manual

Frequently Asked Questions

How do I code for a patient with a history of malignant neoplasm of the female genital organs?

Use a code from the Z85.4- range to document a history of malignant neoplasm of the female genital organs.