ICD-10 Guide

Medication Side Effect

ICD-10 Coding for Medication Side Effect(T45.AX5D, K52.1)

PRIMARY SPECIALTYOncology

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Medication Side Effect?

Essential facts and insights about Medication Side Effect

Key Clinical Considerations:

Nausea and vomiting
Fatigue and weakness
Anemia or low blood counts
Skin rashes or reactions
Neuropathy or pain

Clinical Information

Clinical Criteria & Documentation Requirements

Patient's medication history
Detailed description of symptoms
Onset and duration of side effects
Impact on treatment regimen
Follow-up plans and interventions

Coding Guidelines

Usage Guidelines & Examples

Follow usage guidelines for specific medications and their known side effects.
Common errors include misclassifying side effects as unrelated conditions.

Code Exclusions

Important Exclusions

Conditions caused by non-oncological medications
Alternative codes for unrelated adverse effects

Specialty Focus

Primary Specialty

Oncology

Specialty Applications

Oncology patients undergoing chemotherapy or targeted therapies
Outpatient and inpatient clinical 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

What are the documentation requirements?

Include detailed patient history, medication list, and specific side effects.

What are the billing considerations?

Ensure accurate coding to reflect the severity and impact of side effects on treatment.

Medication Side Effect

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What are the documentation requirements?

What are the billing considerations?

Medication Side Effect

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What are the documentation requirements?

What are the billing considerations?