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v1.0.0
ICD-10 Guide
Diagnoses.621

.621

ICD-10 Coding for Type 2 Diabetes Mellitus with Foot Ulcer(E11.621)

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

Diagnosis Overview

What is .621?
Essential facts and insights about Type 2 Diabetes Mellitus with Foot Ulcer

Key Clinical Considerations:

  • Pain in the heel or arch of the foot
  • Tenderness upon palpation of the plantar fascia
  • Pain worsens with activity or after prolonged rest

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including duration and severity of symptoms
  • Physical examination findings related to foot structure and function
  • Imaging results if applicable (e.g., X-rays, MRI)

Coding Guidelines

Usage Guidelines & Examples

  • Follow usage guidelines to avoid upcoding or downcoding.
  • Common errors include misidentifying the location of pain or failing to document the duration of symptoms.

Code Exclusions

Important Exclusions

  • Fractures of the foot
  • Other causes of heel pain such as Achilles tendonitis

Related ICD-10 Codes

Primary Codes
.621
Plantar fasciitis
Ancillary Codes
Z79.4
Z79.84
Differential Codes
E11.622

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Podiatry

Specialty Applications

  • Adults and children with foot pain
  • Podiatry clinics and orthopedic 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 patient history, physical exam findings, and any imaging results.

What are the billing considerations?

Ensure accurate coding based on clinical documentation and check for payer-specific guidelines.