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ICD-10 Coding for Cancer Antigen 125(R97.1, C56.9)

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Learn about ICD-10 coding for elevated Cancer Antigen 125 (CA-125), including code R97.1, documentation requirements, and clinical guidelines.

Also known as:
CA-125Carbohydrate Antigen 125
Related ICD-10 Code Ranges

Complete code families applicable to Cancer Antigen 125

R00-R99Primary Range

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescription
R97.1Elevated cancer antigen 125 [CA 125]
C56.9Malignant neoplasm of ovary, unspecified
Primary ICD-10-CM Codes
Elevated cancer antigen 125 [CA 125]
R97.1Billable
Differential Codes

Alternative codes to consider when ruling out similar conditions

Malignant neoplasm of ovary, unspecifiedC56.9
Benign neoplasm of ovaryD27

Documentation & Coding Risks

Avoid these common issues when documenting Cancer Antigen 125.

Failing to document clinical context for CA-125 testing

Impact

Clinical: May lead to misinterpretation of test results., Regulatory: Non-compliance with documentation standards., Financial: Potential claim denials due to lack of justification.

Mitigation

Always include clinical indication in the patient's record., Use templates to ensure completeness.

Using R97.1 as a primary code for cancer monitoring

Impact

Reimbursement: Incorrect sequencing can lead to claim denials., Compliance: Non-compliance with coding guidelines., Data Quality: Affects accuracy of cancer registry data.

Mitigation

Always sequence the malignancy code first, followed by R97.1.

Incorrect sequencing of codes

Impact

R97.1 used as primary code for cancer monitoring.

Mitigation

Educate coders on proper sequencing rules.

Frequently Asked Questions

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with R97.1.