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ICD-10 Guide
ICD-10 CodesQ75.049

Q75.049

Billable

Lambdoid craniosynostosis, unspecified

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

Code Description

ICD-10 Q75.049 is a billable code used to indicate a diagnosis of lambdoid craniosynostosis, unspecified.

Key Diagnostic Point:

Lambdoid craniosynostosis is a congenital condition characterized by the premature fusion of the lambdoid suture, which is located at the back of the skull. This fusion restricts the growth of the skull in the affected area, leading to an abnormal head shape, often described as a flattening on one side of the head. The condition can result in increased intracranial pressure, developmental delays, and potential neurological issues if not addressed. Diagnosis typically involves a physical examination and imaging studies such as CT scans to assess the skull shape and suture fusion. Treatment often requires surgical intervention to correct the skull shape and allow for normal brain growth. The condition may occur as an isolated anomaly or as part of a syndrome, necessitating a thorough evaluation for associated congenital malformations or chromosomal abnormalities.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation and severity of the condition
  • Potential for associated syndromic features
  • Need for multidisciplinary evaluation and management
  • Documentation of imaging studies and surgical interventions

Audit Risk Factors

  • Inadequate documentation of the diagnosis and treatment plan
  • Failure to document associated congenital anomalies
  • Misclassification of the type of craniosynostosis
  • Lack of imaging reports in the medical record

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Pediatric documentation should include growth parameters, developmental milestones, and any associated conditions.

Common Clinical Scenarios

Common scenarios include infants presenting with abnormal head shape during routine check-ups or referrals for developmental delays.

Billing Considerations

Considerations include the age of the child, potential for neurodevelopmental impact, and the timing of surgical intervention.

Genetics

Documentation Requirements

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

Common Clinical Scenarios

Scenarios may involve genetic counseling for families with a history of craniosynostosis or related syndromes.

Billing Considerations

Considerations include the need for genetic evaluation to rule out syndromic causes and the implications for family planning.

Coding Guidelines

Inclusion Criteria

Use Q75.049 When
  • Follow official ICD
  • CM guidelines for coding congenital malformations, ensuring accurate documentation of the condition and any associated anomalies
  • Use additional codes to capture related conditions or complications

Exclusion Criteria

Do NOT use Q75.049 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

Surgical reports detailing the procedure and indications.

Specialty Considerations

Pediatric surgical 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 lambdoid craniosynostosis?

Lambdoid craniosynostosis is a congenital condition where the lambdoid suture fuses prematurely, leading to an abnormal head shape and potential complications such as increased intracranial pressure and developmental delays.