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ICD-10 Guide
DiagnosesArm Pain

Arm Pain

ICD-10 Coding for Arm Pain(M79.601, M79.602)

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

Diagnosis Overview

What is Arm Pain?
Essential facts and insights about Arm Pain

Key Clinical Considerations:

  • Patients may present with localized pain in the arm, which can be sharp, dull, or throbbing.
  • Diagnostic tests may include MRI or ultrasound to assess for soft tissue injuries or nerve compression.
  • Physical examination may reveal tenderness, swelling, or limited range of motion in the affected arm.
  • Imaging findings may show fractures, dislocations, or signs of arthritis in the shoulder, elbow, or wrist.
  • Severity can be assessed based on pain intensity (e.g., mild, moderate, severe) and functional impairment.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Medical records must include a clear description of the patient's symptoms, duration, and impact on daily activities.
  • Specific terminology such as 'localized arm pain' or 'radiating pain' must be documented.
  • Examples include: 'Patient reports pain in the right arm for 2 weeks, affecting sleep and daily activities.'
  • Documentation must demonstrate medical necessity for any imaging or treatment provided.
  • Quality measures may require documentation of pain assessment and functional status.

Coding Guidelines

Usage Guidelines & Examples

  • Use M79.601 for right arm pain and M79.602 for left arm pain; specify based on the side affected.
  • Do not use these codes for pain due to fractures or other specific conditions that have their own codes.
  • Similar codes include M25.5 (pain in joint) and M79.60 (pain in unspecified site), but these are less specific.
  • Common errors include using the unspecified code when the side is known; always specify left or right.
  • In complex cases, consider additional codes for underlying conditions contributing to arm pain.

Code Exclusions

Important Exclusions

  • Excludes conditions such as fractures (S42), dislocations (S43), and specific neuropathies (G56).
  • Alternative codes for excluded conditions include S42.9 for unspecified fracture of the upper arm.
  • Conditions are excluded because they have distinct coding requirements and treatment protocols.
  • Common mistakes include misclassifying fractures or dislocations as arm pain; always verify imaging results.
  • Related but distinct conditions include shoulder impingement syndrome and lateral epicondylitis.

Related ICD-10 Codes

Primary Codes
M79.601
Pain in right arm
M79.602
Pain in left arm
Ancillary Codes
G89.11
Differential Codes
M25.511
M25.512

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Orthopedics

Specialty Applications

  • Applies to patients with musculoskeletal pain, nerve injuries, or overuse syndromes.
  • Patient populations include adults and elderly individuals, particularly those with a history of repetitive strain.
  • Clinical settings include outpatient orthopedic clinics, emergency departments, and rehabilitation facilities.
  • Specialty-specific applications are relevant in orthopedics, physical therapy, and pain management.
  • Treatment contexts may involve conservative management, physical therapy, or surgical interventions.

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

Template 1

Template: 'Patient diagnosed with arm pain based on clinical findings of tenderness and limited range of motion.'

Template 2

Template: 'Clinical presentation consistent with arm pain including sharp pain radiating to the shoulder.'

Template 3

Template: 'Diagnostic criteria met as evidenced by MRI showing no fractures but soft tissue swelling.'

Template 4

Template: 'Treatment plan initiated for arm pain with physical therapy and NSAIDs prescribed.'

Template 5

Template: 'Follow-up care for arm pain including monitoring of pain levels and functional improvement.'

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 documentation is required for this diagnosis?

Document the patient's symptoms, duration, and impact on function.

How does this differ from similar diagnoses?

Arm pain is non-specific; other diagnoses may indicate specific underlying conditions.

What are common billing considerations?

Ensure medical necessity is documented to support imaging and treatment claims.

What procedures are typically associated?

CPT codes for physical therapy, imaging, or injections may be relevant.

Are there any quality reporting implications?

Quality measures may include pain assessments and functional outcomes.