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ICD-10 Coding for Tenosynovitis(M65.4, M65.81)

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

Also known as:

Tendon sheath inflammationDe Quervain's syndromeRadial styloid tenosynovitis

Related ICD-10 Code Ranges

Complete code families applicable to Tenosynovitis

M65-M65.9Primary Range

Synovitis and tenosynovitis

This range includes all forms of tenosynovitis, including De Quervain's and other specified and unspecified types.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
M65.4Radial styloid tenosynovitis [De Quervain]Use for confirmed cases of De Quervain's tenosynovitis with documented clinical findings.
  • Positive Finkelstein test
  • Radial wrist swelling
M65.81Other specified synovitis and tenosynovitisUse for tenosynovitis affecting tendons other than those involved in De Quervain's.
  • Localized non-radial tendon pain

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 De Quervain's tenosynovitis

Essential facts and insights about Tenosynovitis

The ICD-10 code for De Quervain's tenosynovitis is M65.4, indicating radial styloid tenosynovitis.

Primary ICD-10-CM Codes for tenosynovitis

Radial styloid tenosynovitis [De Quervain]
Billable Code

Decision Criteria

clinical Criteria

  • Presence of radial wrist pain and positive Finkelstein test

Applicable To

  • De Quervain's tenosynovitis

Excludes

  • Infectious tenosynovitis (M65.0)

Clinical Validation Requirements

  • Positive Finkelstein test
  • Radial wrist swelling

Code-Specific Risks

  • Misclassification as unspecified tenosynovitis

Coding Notes

  • Ensure laterality is documented when applicable.

Ancillary Codes

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

Left wrist synovitis and tenosynovitis

M65.841
Use when specifying laterality for left wrist involvement.

Differential Codes

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

Other specified synovitis and tenosynovitis

M65.81
Used for non-De Quervain's tenosynovitis affecting other tendons.

Radial styloid tenosynovitis [De Quervain]

M65.4
Used specifically for De Quervain's cases.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Tenosynovitis to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code M65.4.

Impact

Clinical: May lead to incorrect treatment., Regulatory: Non-compliance with coding standards., Financial: Potential claim denials.

Mitigation Strategy

Always document the side affected.

Impact

Reimbursement: May lead to reduced reimbursement due to lack of specificity., Compliance: Non-compliance with coding guidelines., Data Quality: Decreases accuracy of clinical data.

Mitigation Strategy

Use specific codes like M65.4 for De Quervain's when applicable.

Impact

Using unspecified codes when specific codes are available.

Mitigation Strategy

Regular training on code updates and specificity.

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 Tenosynovitis, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Tenosynovitis

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

De Quervain's tenosynovitis diagnosis

Specialty: Orthopedics

Required Elements

  • Location of pain
  • Provocative test results
  • Imaging findings

Example Documentation

Patient presents with radial wrist pain. Positive Finkelstein test. Ultrasound shows tendon sheath thickening.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Wrist pain.
Good Documentation Example
Radial wrist pain with positive Finkelstein test indicating De Quervain's.
Explanation
The good example specifies the location, test results, and diagnosis.

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

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