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ICD-10 Guide
ICD-10 CodesM21.51

M21.51

Billable

Acquired clawhand

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/17/2025

Code Description

ICD-10 M21.51 is a billable code used to indicate a diagnosis of acquired clawhand.

Key Diagnostic Point:

Acquired clawhand, also known as claw fingers, is a deformity characterized by the hyperextension of the proximal interphalangeal joints and flexion of the distal interphalangeal joints of the fingers. This condition can arise from various underlying causes, including neurological disorders, trauma, or prolonged immobilization. The resultant hand posture resembles a claw, which can significantly impair hand function and dexterity. Patients may experience difficulty in grasping objects, performing fine motor tasks, and may also have associated pain or discomfort. The condition can be unilateral or bilateral and is often seen in conjunction with other acquired deformities such as hallux valgus or other finger abnormalities. Treatment options may include physical therapy, splinting, and in some cases, surgical intervention to correct the deformity and restore function. Corrective procedures may involve tendon transfers, joint releases, or arthrodesis, depending on the severity and underlying cause of the clawhand. Accurate diagnosis and coding are essential for appropriate management and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes (neurological, traumatic, etc.)
  • Potential for co-existing conditions (e.g., hallux valgus)
  • Need for detailed documentation of functional impairment
  • Variability in treatment approaches and outcomes

Audit Risk Factors

  • Inadequate documentation of the underlying cause
  • Failure to document associated functional limitations
  • Incorrect linkage to surgical procedures
  • Misclassification as congenital rather than acquired

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed clinical notes on the deformity, treatment plan, and outcomes.

Common Clinical Scenarios

Patients presenting with hand deformities post-trauma or neurological conditions.

Billing Considerations

Ensure to document any surgical interventions and rehabilitation efforts.

Neurology

Documentation Requirements

Comprehensive neurological assessment and documentation of any underlying conditions.

Common Clinical Scenarios

Patients with neurological disorders leading to hand deformities.

Billing Considerations

Document the neurological assessment findings and their relation to the clawhand.

Coding Guidelines

Inclusion Criteria

Use M21.51 When
  • According to ICD
  • 10 coding guidelines, M21
  • 51 should be used when the clawhand is acquired, and the underlying cause is documented
  • It is essential to differentiate it from congenital conditions and to provide sufficient detail regarding the functional impact on the patient

Exclusion Criteria

Do NOT use M21.51 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

26340CPT Code

Tendon transfer, hand

Clinical Scenario

Used in surgical correction of clawhand to restore function.

Documentation Requirements

Detailed operative report and pre-operative assessment.

Specialty Considerations

Orthopedic surgeons must document the rationale for the procedure.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of acquired conditions like clawhand, improving the accuracy of patient records and reimbursement processes. The detailed coding structure helps in better tracking of treatment outcomes and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of acquired conditions like clawhand, improving the accuracy of patient records and reimbursement processes. The detailed coding structure helps in better tracking of treatment outcomes and resource allocation.

Reimbursement & Billing Impact

reimbursement processes. The detailed coding structure helps in better tracking of treatment outcomes and resource allocation.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the difference between acquired clawhand and congenital clawhand?

Acquired clawhand develops due to external factors such as trauma or neurological conditions, while congenital clawhand is present at birth and results from genetic factors.