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v1.0.0
ICD-10 Guide
DiagnosesHypotonia

Hypotonia

ICD-10 Coding for Hypotonia(P94.2, R27.8)

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

Diagnosis Overview

What is Hypotonia?
Essential facts and insights about Hypotonia

Key Clinical Considerations:

  • Decreased muscle tone observed in infants and children
  • Electromyography (EMG) showing reduced muscle activity
  • Hypotonic posture during physical examination

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including developmental milestones
  • Detailed physical examination findings
  • Use of terms like 'hypotonia' and 'muscle weakness'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding associated conditions
  • Common errors include misclassifying hypotonia as muscle weakness without further specification

Code Exclusions

Important Exclusions

  • Neuromuscular disorders like muscular dystrophy
  • Alternative codes for specific syndromes causing hypotonia

Related ICD-10 Codes

Primary Codes
G72.0
Hypotonia
Ancillary Codes
R41.840
M62.81
Differential Codes
R27.8
P94.2

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Pediatrics

Specialty Applications

  • Pediatric patients with developmental concerns
  • Outpatient and inpatient pediatric 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 history, physical exam findings, and any diagnostic tests.

Billing considerations?

Ensure accurate coding to reflect the severity and underlying cause of hypotonia.