Q75.04 – Lambdoid craniosynostosis

ICD-10-CM 2027 diagnosis code · Congenital malformations and deformations of the musculoskeletal system

Non-billable header

ICD-10-CM code Q75.04

Code: Q75.04 (claims format: Q7504)
Description: Lambdoid craniosynostosis
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
Block: Q65-Q79 Congenital malformations and deformations of the musculoskeletal system
Parent codes: Q75 › Q75.0

Billable codes under Q75.04

Q75.04 is a header code and cannot be used on claims. Choose the most specific code:

Q75.041 – Lambdoid craniosynostosis, unilateralBillable
Q75.042 – Lambdoid craniosynostosis, bilateralBillable
Q75.049 – Lambdoid craniosynostosis, unspecifiedBillable

Notes for Q75.04

Applicable to:

Non-deformational posterior plagiocephaly

Excludes1 (not coded here):

dolichocephaly (Q67.2)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Q75 – Other congenital malformations of skull and face bones

Excludes1 (not coded here):

congenital malformation of face NOS (Q18.-)
congenital malformation syndromes classified to Q87.-
dentofacial anomalies [including malocclusion] (M26.-)
musculoskeletal deformities of head and face (Q67.0-Q67.4)
skull defects associated with congenital anomalies of brain such as:
anencephaly (Q00.0)
encephalocele (Q01.-)
hydrocephalus (Q03.-)
microcephaly (Q02)

Index terms for Q75.04

Entries in the ICD-10-CM alphabetic index that lead to this code:

Plagiocephaly, non-deformational, posterior

Related codes in Q75.0

Q75.00 – Craniosynostosis, unspecifiedHeader
Q75.01 – Sagittal craniosynostosisBillable
Q75.02 – Coronal craniosynostosisHeader
Q75.03 – Metopic craniosynostosisBillable
Q75.05 – Multi-suture craniosynostosisHeader
Q75.08 – Other single-suture craniosynostosisBillable

Frequently asked questions

What is ICD-10 code Q75.04?

Q75.04 is the ICD-10-CM code for lambdoid craniosynostosis, in the block Q65-Q79 (Congenital malformations and deformations of the musculoskeletal system).

Is Q75.04 a billable code?

No. Q75.04 is a header code with more specific child codes; report one of the billable codes listed above.

What category does Q75.04 belong to?

It belongs to category Q75 – Other congenital malformations of skull and face bones.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.