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ICD-10 Guide
ICD-10 CodesQ75.041

Q75.041

Billable

Lambdoid craniosynostosis, unilateral

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

Code Description

ICD-10 Q75.041 is a billable code used to indicate a diagnosis of lambdoid craniosynostosis, unilateral.

Key Diagnostic Point:

Lambdoid craniosynostosis is a congenital condition characterized by the premature fusion of the lambdoid suture, which runs along the back of the skull. This unilateral fusion leads to an asymmetrical head shape, often resulting in flattening on one side of the skull and compensatory bulging on the opposite side. The condition can be associated with developmental delays, neurological issues, and facial asymmetry. Diagnosis typically involves physical examination and imaging studies such as CT scans to assess the suture fusion and rule out other craniosynostosis types. Treatment often requires surgical intervention to correct the skull shape and allow for normal brain growth. Early diagnosis and management are crucial to minimize potential complications and improve outcomes for affected infants.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from other types of craniosynostosis
  • Need for precise documentation of unilateral involvement
  • Potential association with other congenital anomalies
  • Variability in surgical intervention and follow-up care

Audit Risk Factors

  • Inadequate documentation of the unilateral nature of the condition
  • Failure to document associated anomalies or syndromes
  • Lack of imaging study reports in the medical record
  • Incorrect coding of the type of craniosynostosis

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation must include growth parameters, developmental milestones, and any associated symptoms or conditions.

Common Clinical Scenarios

Common scenarios include routine well-child visits where head shape is assessed, referrals for developmental delays, and pre-operative evaluations.

Billing Considerations

Consideration must be given to the age of the child and the timing of surgical intervention, as well as any potential impacts on development.

Genetics

Documentation Requirements

Genetic documentation should include family history, any genetic testing results, and potential syndromic associations.

Common Clinical Scenarios

Genetic counseling sessions for families with a history of craniosynostosis or related syndromes.

Billing Considerations

Awareness of syndromic associations such as Apert syndrome or Crouzon syndrome is critical for accurate coding.

Coding Guidelines

Inclusion Criteria

Use Q75.041 When
  • 10 guidelines specify that congenital malformations should be coded based on the specific type and location of the anomaly
  • Documentation must support the diagnosis, including imaging and clinical findings

Exclusion Criteria

Do NOT use Q75.041 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

61595CPT Code

Cranial vault remodeling

Clinical Scenario

Used in surgical correction of lambdoid craniosynostosis.

Documentation Requirements

Operative report detailing the procedure and indications for surgery.

Specialty Considerations

Neurosurgical documentation must include pre-operative assessments and post-operative follow-up.

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, improving the accuracy of diagnoses and treatment tracking for conditions like lambdoid craniosynostosis.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the accuracy of diagnoses and treatment tracking for conditions like lambdoid craniosynostosis.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of congenital conditions, improving the accuracy of diagnoses and treatment tracking for conditions like lambdoid craniosynostosis.

Resources

Clinical References

  • •
    American Academy of Pediatrics - Craniosynostosis

Coding & Billing References

  • •
    American Academy of Pediatrics - Craniosynostosis

Frequently Asked Questions

What is the significance of coding Q75.041 accurately?

Accurate coding of Q75.041 is crucial for appropriate treatment planning, reimbursement, and tracking of outcomes in patients with lambdoid craniosynostosis. It ensures that healthcare providers can deliver the necessary care and that patients receive appropriate follow-up.