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v1.0.0
ICD-10 Guide
ICD-10 CodesQ84.3

Q84.3

Billable

Anonychia

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 Q84.3 is a billable code used to indicate a diagnosis of anonychia.

Key Diagnostic Point:

Anonychia is a rare congenital condition characterized by the absence of one or more nails. It can occur as an isolated anomaly or as part of a syndrome involving other congenital malformations. The condition may affect both fingers and toes, leading to functional and aesthetic concerns. Anonychia can be associated with genetic syndromes such as nail-patella syndrome, which may also involve skeletal abnormalities and other systemic features. The absence of nails can lead to increased sensitivity of the distal phalanges and may impact the ability to perform fine motor tasks. Diagnosis is typically made through clinical examination, and genetic testing may be warranted if a syndromic cause is suspected. Management often focuses on supportive care, including protective measures for the fingers and toes, and addressing any associated conditions. Understanding the genetic basis and potential syndromic associations is crucial for comprehensive care and counseling.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation (isolated vs. syndromic)
  • Need for genetic testing and interpretation
  • Potential association with other congenital anomalies
  • Documentation of associated conditions

Audit Risk Factors

  • Inadequate documentation of associated syndromes
  • Misclassification as an acquired condition
  • Failure to document genetic testing results
  • Lack of clarity on the extent of nail absence

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed clinical notes on the presence of anonychia, associated congenital anomalies, and any functional impairments.

Common Clinical Scenarios

Pediatric patients presenting with absent nails during routine examinations or referrals for genetic evaluation.

Billing Considerations

Consideration of developmental milestones and functional impacts on the child’s daily activities.

Genetics

Documentation Requirements

Genetic testing results, family history, and any syndromic associations must be documented thoroughly.

Common Clinical Scenarios

Patients with anonychia being evaluated for genetic syndromes or family counseling regarding inheritance patterns.

Billing Considerations

Understanding the implications of genetic findings and the potential for associated conditions.

Coding Guidelines

Inclusion Criteria

Use Q84.3 When
  • Follow ICD
  • CM guidelines for coding congenital malformations, ensuring accurate documentation of the condition and any associated anomalies
  • Use additional codes for related conditions as necessary

Exclusion Criteria

Do NOT use Q84.3 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99213CPT Code

Established patient office visit

Clinical Scenario

Used for follow-up visits in patients with anonychia and associated conditions.

Documentation Requirements

Document the patient's history, examination findings, and any management plans.

Specialty Considerations

Pediatricians should focus on developmental assessments, while geneticists should emphasize genetic counseling.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of congenital conditions like anonychia, improving the ability to capture associated anomalies and syndromic presentations.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions like anonychia, improving the ability to capture associated anomalies and syndromic presentations.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of congenital conditions like anonychia, improving the ability to capture associated anomalies and syndromic presentations.

Resources

Clinical References

  • •
    Congenital Anomalies: A Guide for Clinicians

Coding & Billing References

  • •
    Congenital Anomalies: A Guide for Clinicians

Frequently Asked Questions

What is the significance of coding anonychia accurately?

Accurate coding of anonychia is crucial for proper patient management, understanding potential genetic implications, and ensuring appropriate reimbursement for services rendered.