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v1.0.0
ICD-10 Guide
DiagnosesHand Foot Mouth Disease

Hand Foot Mouth Disease

ICD-10 Coding for Hand, Foot, and Mouth Disease(B08.4)

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

Diagnosis Overview

What is Hand Foot Mouth Disease?
Essential facts and insights about Hand, Foot, and Mouth Disease

Key Clinical Considerations:

  • Fever, sore throat, and malaise
  • Presence of vesicular lesions on hands, feet, and oral mucosa
  • Physical exam may reveal erythematous macules that progress to vesicles

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including onset of symptoms and exposure history
  • Use of specific terms like 'hand-foot-mouth disease' in documentation
  • Examples include noting the location and appearance of lesions

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding infectious diseases; avoid using unspecified codes.
  • Common errors include misdiagnosing as other viral exanthems.

Code Exclusions

Important Exclusions

  • Other viral exanthems like chickenpox or measles
  • Alternative codes for similar presentations

Related ICD-10 Codes

Primary Codes
B08.4
Hand, foot, and mouth disease
Ancillary Codes
R50.9
Differential Codes
B00.2

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Pediatrics

Specialty Applications

  • Pediatric patients, especially under 5 years old
  • Outpatient pediatric clinics and emergency departments

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 all clinical findings, including symptoms and physical exam results.

Billing considerations?

Ensure accurate coding to avoid claim denials; check for any local coverage determinations.