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ICD-10 Guide
DiagnosesAbnormal Cytosine Monophosphate

Abnormal Cytosine Monophosphate

ICD-10 Coding for Abnormal Cytosine Monophosphate(R79.89)

PRIMARY SPECIALTYOncology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Abnormal Cytosine Monophosphate?
Essential facts and insights about Abnormal Cytosine Monophosphate

Key Clinical Considerations:

  • Presence of abnormal levels of cytosine monophosphate in blood or tissue samples
  • Symptoms associated with abnormal cell growth or function

Clinical Information

Clinical Criteria & Documentation Requirements

  • Detailed lab results indicating abnormal cytosine monophosphate levels
  • Record of patient symptoms and physical examination findings
  • History and progression of the patient's condition

Coding Guidelines

Usage Guidelines & Examples

  • R79.89 is used for other specified abnormal findings of blood chemistry, which includes abnormal cytosine monophosphate
  • This code differs from R79.9, which is used for unspecified abnormal findings of blood chemistry

Code Exclusions

Important Exclusions

  • Conditions where cytosine monophosphate levels are within normal range
  • Conditions related to other types of nucleotides or nucleosides

Related ICD-10 Codes

Primary Codes
R79.89
Other specified abnormal findings of blood chemistry
Ancillary Codes
T45.1X5A
E79.9
Differential Codes
R79.9
R79.9
only if CMP levels are not specified or clinically correlated.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Oncology

Specialty Applications

  • Conditions associated with abnormal cell growth or function
  • Scenarios where abnormal cytosine monophosphate levels are detected in lab results

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Patient presents with symptoms consistent with abnormal cell growth. Lab results confirm abnormal cytosine monophosphate levels.

Template 2

Abnormal levels of cytosine monophosphate detected in blood/tissue samples. Patient's condition and symptoms align with this finding.

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What is abnormal cytosine monophosphate?

It refers to the presence of abnormal levels of cytosine monophosphate, a nucleotide involved in cellular functions, in the blood or tissue samples.

When should this code be used?

This code should be used when lab results indicate abnormal levels of cytosine monophosphate and the patient exhibits symptoms associated with abnormal cell growth or function.