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ICD-10 Coding for Elevated Carcinoma Antigen 19-9(R97.2, C25.9)

Complete ICD-10-CM coding and documentation guide for Elevated Carcinoma Antigen 19-9. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Elevated CA 19-9Carbohydrate Antigen 19-9 Elevation

Related ICD-10 Code Ranges

Complete code families applicable to Elevated Carcinoma Antigen 19-9

Abnormal findings on examination of blood, without diagnosis

Includes codes for abnormal tumor markers like CA 19-9 when no specific diagnosis is confirmed.

C22-C25Primary Range

Malignant neoplasms of liver, intrahepatic bile ducts, and pancreas

Primary range for coding malignancies associated with elevated CA 19-9 levels.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
R97.2Elevated tumor associated antigenUse when CA 19-9 is elevated but no malignancy is confirmed after thorough investigation.
  • Persistent elevation of CA 19-9 after negative imaging and biopsy results
C25.9Malignant neoplasm of pancreas, unspecifiedUse when pancreatic cancer is confirmed and CA 19-9 is used for monitoring.
  • Histological confirmation of pancreatic cancer

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for elevated CA 19-9

Essential facts and insights about Elevated Carcinoma Antigen 19-9

The ICD-10 code for elevated CA 19-9 without confirmed malignancy is R97.2. For confirmed pancreatic cancer, use C25.9.

Primary ICD-10-CM Codes for elevated carcinoma 19-9

Elevated tumor associated antigen
Non-billable Code

Decision Criteria

clinical Criteria

  • No malignancy found after imaging and biopsy

Applicable To

  • Elevated CA 19-9 without confirmed malignancy

Excludes

Clinical Validation Requirements

  • Persistent elevation of CA 19-9 after negative imaging and biopsy results

Code-Specific Risks

  • Risk of denial if used without documented workup

Coding Notes

  • Ensure documentation of negative malignancy workup.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Acute pancreatitis, unspecified

K85.9
Use when CA 19-9 is elevated due to pancreatitis.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Malignant neoplasm of pancreas, unspecified

C25.9
Use when pancreatic cancer is confirmed with elevated CA 19-9.

Elevated tumor associated antigen

R97.2
Use R97.2 when no malignancy is confirmed.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Elevated Carcinoma Antigen 19-9 to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code R97.2.

Impact

Clinical: May lead to inappropriate treatment decisions., Regulatory: Non-compliance with documentation standards., Financial: Potential claim denials.

Mitigation Strategy

Ensure complete documentation of diagnostic workup.

Impact

Reimbursement: Claims may be denied or reimbursed at a lower rate., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate cancer registry data.

Mitigation Strategy

Use the specific malignancy code (e.g., C25.9) as primary.

Impact

Using R97.2 without documented malignancy exclusion.

Mitigation Strategy

Ensure thorough documentation of negative malignancy workup.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Elevated Carcinoma Antigen 19-9, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Elevated Carcinoma Antigen 19-9

Use these documentation templates to ensure complete and accurate documentation for Elevated Carcinoma Antigen 19-9. These templates include all required elements for proper coding and billing.

Monitoring pancreatic cancer

Specialty: Oncology

Required Elements

  • CA 19-9 levels
  • Imaging results
  • Histological confirmation

Example Documentation

CA 19-9 increased from 250 to 1,200 U/mL over 3 months with new liver metastases on CT.

Examples: Poor vs. Good Documentation

Poor Documentation Example
High CA 19-9
Good Documentation Example
CA 19-9 19,516,020 U/mL (Ref: <37) with biopsy-proven pancreatic adenocarcinoma
Explanation
The good example provides specific CA 19-9 levels and confirms cancer diagnosis.

Need help with ICD-10 coding for Elevated Carcinoma Antigen 19-9? Ask your questions below.

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