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ICD-10 Coding for Leg Pain(M79.604, M79.605, M79.606)

Complete ICD-10-CM coding and documentation guide for Leg Pain. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Lower Limb PainExtremity Painleg discomfort

Related ICD-10 Code Ranges

Complete code families applicable to Leg Pain

M79.60-M79.66Primary Range

Pain in limb

This range includes specific codes for pain in different parts of the limb, including laterality.

Chronic pain

Used when the encounter is primarily for pain management.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
M79.604Pain in right legUse when the patient presents with pain specifically in the right leg without a known underlying condition.
  • Documented laterality
  • Specific location in the leg
M79.605Pain in left legUse when the patient presents with pain specifically in the left leg without a known underlying condition.
  • Documented laterality
  • Specific location in the leg
M79.606Pain in unspecified legUse when the documentation does not specify which leg is affected.
  • Lack of specific laterality documentation

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for leg pain

Essential facts and insights about Leg Pain

The ICD-10 code for unspecified leg pain is M79.606. Use M79.604 for right leg pain and M79.605 for left leg pain.

Primary ICD-10-CM Codes for leg pain

Pain in right leg
Billable Code

Decision Criteria

clinical Criteria

  • Presence of pain in the right leg with no other specified cause

Applicable To

  • Right leg pain

Excludes

Clinical Validation Requirements

  • Documented laterality
  • Specific location in the leg

Code-Specific Risks

  • Incorrect use if laterality is not documented

Coding Notes

  • Ensure laterality is documented to avoid unspecified coding.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Unspecified mononeuropathy of lower limb

G57.90
Use when neuropathy is suspected as the underlying cause of leg pain.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Pain in right foot

M79.671
Use when pain is localized to the foot rather than the leg.

Pain in left foot

M79.672
Use when pain is localized to the foot rather than the leg.

Pain in unspecified foot

M79.676
Use when pain is localized to the foot rather than the leg.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Leg Pain to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code M79.604.

Impact

Clinical: Ambiguity in treatment planning, Regulatory: Non-compliance with coding standards, Financial: Potential for denied claims or reduced reimbursement

Mitigation Strategy

Train staff on importance of laterality, Use templates that prompt for laterality

Impact

Reimbursement: May lead to reduced reimbursement due to unspecified coding, Compliance: Non-compliance with coding guidelines, Data Quality: Decreased data specificity and quality

Mitigation Strategy

Ensure documentation specifies laterality and use M79.604 or M79.605 accordingly.

Impact

Using unspecified codes when specific codes are available

Mitigation Strategy

Ensure documentation supports the most specific code available

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Leg Pain, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Leg Pain

Use these documentation templates to ensure complete and accurate documentation for Leg Pain. These templates include all required elements for proper coding and billing.

Chronic leg pain management

Specialty: Pain Management

Required Elements

  • Location and laterality of pain
  • Pain severity and character
  • Aggravating and alleviating factors
  • Associated symptoms
  • Diagnostic test results

Example Documentation

Patient reports chronic 6/10 aching pain in left calf, worsened by walking, relieved by rest. Doppler ultrasound confirms PAD.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has leg pain.
Good Documentation Example
Patient reports sharp pain in left lower leg, exacerbated by walking, with no recent trauma. MRI shows no fracture, suspect peripheral neuropathy.
Explanation
The good example provides specific location, character, and potential cause of the pain, enhancing clinical clarity and coding accuracy.

Need help with ICD-10 coding for Leg Pain? Ask your questions below.

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