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ICD-10 Guide
ICD-10 CodesQ84.2

Q84.2

Billable

Other congenital malformations of hair

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

Code Description

ICD-10 Q84.2 is a billable code used to indicate a diagnosis of other congenital malformations of hair.

Key Diagnostic Point:

Congenital malformations of hair encompass a variety of conditions that affect the structure, distribution, and growth of hair. These malformations can manifest as abnormalities in hair density, texture, or pattern, and may be associated with other congenital syndromes. Conditions such as hypotrichosis (reduced hair), alopecia (absence of hair), and hair shaft abnormalities (e.g., pili torti, trichorrhexis nodosa) fall under this category. These hair anomalies can be isolated or part of broader syndromic presentations, often linked to genetic mutations or chromosomal abnormalities. For instance, congenital alopecia may be associated with ectodermal dysplasia, while other hair malformations can indicate underlying genetic syndromes such as Turner syndrome or Down syndrome. Accurate diagnosis often requires a multidisciplinary approach, including dermatological evaluation and genetic testing, to determine the underlying cause and associated risks. Understanding the implications of these malformations is crucial for management and counseling of affected families.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and associated syndromes
  • Need for genetic testing to confirm diagnosis
  • Potential overlap with other congenital conditions
  • Documentation of associated anomalies

Audit Risk Factors

  • Inadequate documentation of associated congenital conditions
  • Failure to link hair malformations to genetic syndromes
  • Misclassification of hair conditions as acquired rather than congenital
  • Lack of clarity in clinical notes regarding the extent of malformation

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation should include detailed descriptions of hair abnormalities, associated symptoms, and family history of congenital conditions.

Common Clinical Scenarios

Common scenarios include evaluation of infants with hair loss, assessment of hair texture abnormalities, and referrals for genetic counseling.

Billing Considerations

Consideration of developmental milestones and psychosocial impacts of hair malformations on children is essential for comprehensive care.

Genetics

Documentation Requirements

Genetic documentation must include family pedigree, results of genetic testing, and any syndromic associations identified.

Common Clinical Scenarios

Scenarios may involve genetic counseling for families with a history of hair malformations or syndromic conditions.

Billing Considerations

Understanding the genetic basis of hair malformations is crucial for risk assessment and management of affected individuals.

Coding Guidelines

Inclusion Criteria

Use Q84.2 When
  • 10 coding guidelines for congenital conditions require specificity in documentation, including the nature of the malformation, associated conditions, and any genetic testing performed
  • Coders should ensure that the diagnosis is supported by clinical findings and that any related conditions are also coded appropriately

Exclusion Criteria

Do NOT use Q84.2 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

81228CPT Code

Genetic testing for hair disorders

Clinical Scenario

Used when genetic testing is performed to identify the cause of congenital hair malformations.

Documentation Requirements

Documentation of clinical indications for testing and results.

Specialty Considerations

Geneticists should ensure that the testing aligns with the suspected diagnosis.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding congenital hair malformations, enabling better tracking of these conditions and their associated syndromes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding congenital hair malformations, enabling better tracking of these conditions and their associated syndromes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for greater specificity in coding congenital hair malformations, enabling better tracking of these conditions and their associated syndromes.

Resources

Clinical References

  • •
    Congenital Hair Disorders: A Review

Coding & Billing References

  • •
    Congenital Hair Disorders: A Review

Frequently Asked Questions

What are the common congenital hair malformations?

Common congenital hair malformations include hypotrichosis, alopecia, and hair shaft abnormalities such as pili torti. These conditions can be isolated or part of syndromic presentations, often requiring genetic evaluation.