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v1.0.0
ICD-10 Guide
DiagnosesPositive Fit Test

Positive Fit Test

ICD-10 Coding for Positive Fecal Immunochemical Test(R19.5)

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

Diagnosis Overview

What is Positive Fit Test?
Essential facts and insights about Positive Fecal Immunochemical Test

Key Clinical Considerations:

  • Presence of gastrointestinal symptoms such as abdominal pain, bloating, or changes in bowel habits
  • Positive results from fecal immunochemical test (FIT) or fecal occult blood test (FOBT)
  • Physical examination may reveal signs of anemia or abdominal tenderness

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including symptoms and risk factors for colorectal cancer
  • Results of FIT or FOBT and any follow-up diagnostic procedures
  • Clear indication of the reason for testing and clinical findings

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines: Use Z12.11 for screening; R19.5 for symptoms.
  • Common errors: Misclassifying screening tests as diagnostic.

Code Exclusions

Important Exclusions

  • Excluded conditions: Patients with known colorectal cancer or inflammatory bowel disease.
  • Alternative codes: Consider Z80.0 for family history of malignant neoplasm of the colon.

Related ICD-10 Codes

Primary Codes
Z12.11
Encounter for screening for malignant neoplasm of the colon
R19.5
Difficulties in defecation
Ancillary Codes
Z12.11
Differential Codes
K92.1
K92.1
if there is overt bleeding present along with a positive FIT.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Gastroenterology

Specialty Applications

  • Patient populations: Adults aged 45 and older, individuals with family history of colorectal cancer.
  • Clinical settings: Outpatient clinics, gastroenterology practices, primary care.

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

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

Documentation requirements?

Document the indication for the test, results, and any follow-up actions.

Billing considerations?

Ensure proper coding for screening tests and any subsequent diagnostic procedures.