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ICD-10 Guide
DiagnosesOsteomyelitis Left Toe

Osteomyelitis Left Toe

ICD-10 Coding for Osteomyelitis of the Left Toe(M86.071, M86.031)

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

Diagnosis Overview

What is Osteomyelitis Left Toe?
Essential facts and insights about Osteomyelitis of the Left Toe

Key Clinical Considerations:

  • Localized pain and swelling in the left toe
  • Presence of fever or systemic signs of infection
  • Bone tenderness upon palpation
  • Key diagnostic tests include MRI or bone scan showing inflammation
  • X-rays may show bone changes or abscess formation

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including onset and duration of symptoms
  • Physical examination findings detailing the affected area
  • Laboratory results indicating infection (e.g., elevated white blood cell count)
  • Specific coding terminology such as 'osteomyelitis' and 'left toe'
  • Documentation examples include detailed notes on treatment plan and follow-up

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines emphasize the need for specificity in coding osteomyelitis.
  • Common errors include misclassifying the site of infection or failing to document systemic symptoms.

Code Exclusions

Important Exclusions

  • Excluded conditions include cellulitis of the toe without bone involvement.
  • Alternative codes may include those for diabetic foot ulcers or other localized infections.

Related ICD-10 Codes

Primary Codes
M86.172
Osteomyelitis, left toe
Ancillary Codes
B95.61
S91.235A
Differential Codes
M86.072
M86.071

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Podiatry

Specialty Applications

  • Patients with diabetes, peripheral vascular disease, or recent foot trauma.
  • Clinical settings include outpatient podiatry clinics and inpatient facilities.

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, physical exam findings, and lab results.

What are the billing considerations?

Ensure accurate coding and documentation to support medical necessity.