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ICD-10 Guide
DiagnosesAnaphylaxis Due To Exercise

Anaphylaxis Due To Exercise

ICD-10 Coding for Exercise-Induced Anaphylaxis(T78.2XXA, T78.09XA)

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

Diagnosis Overview

What is Anaphylaxis Due To Exercise?
Essential facts and insights about Exercise-Induced Anaphylaxis

Key Clinical Considerations:

  • Acute onset of symptoms such as hives, swelling, difficulty breathing, and gastrointestinal distress following exercise.
  • Elevated serum tryptase levels within 1-2 hours post-exercise.
  • Physical exam may reveal urticaria, angioedema, wheezing, or hypotension.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Document the onset, duration, and severity of symptoms post-exercise.
  • Use specific terminology such as 'exercise-induced anaphylaxis' and 'anaphylactic reaction'.
  • Examples include detailed patient history, exercise triggers, and response to treatment.

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for differentiating between food-induced and exercise-induced anaphylaxis.
  • Common errors include misclassifying the cause of anaphylaxis or failing to document exercise as a trigger.

Code Exclusions

Important Exclusions

  • Other types of anaphylaxis not related to exercise.
  • Alternative codes for non-anaphylactic allergic reactions.

Related ICD-10 Codes

Primary Codes
T78.2
Anaphylactic reaction due to unspecified food
T78.4
Anaphylactic reaction due to other specified allergens
Ancillary Codes
W01.XXXA
Z91.018
Differential Codes
T78.09XA
T78.2XXA

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Emergency Medicine

Specialty Applications

  • Individuals with a history of exercise-induced anaphylaxis, particularly athletes.
  • Emergency departments and urgent care settings.

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?

Include detailed patient history, symptom onset, and response to treatment.

Billing considerations?

Ensure accurate coding to reflect the specific cause and severity of the anaphylaxis.