Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
RedactPHI
HIPAA-Compliant PHI Redaction
DetectICD10CM
ICD-10-CM Code Detection
Log in Register free account
1 code page views remaining. Guest accounts are limited to 1 page view. Register free account to get 5 more views.
Log in Register free account

Official Description

Craniotomy for craniosynostosis; frontal or parietal bone flap

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Craniosynostosis is a congenital condition characterized by the premature fusion of one or more cranial sutures in infants, which can lead to significant complications. The cranial sutures are fibrous joints that connect the bones of the skull, allowing for growth and development of the brain during infancy. When these sutures close too early, it restricts the normal expansion of the skull, resulting in increased intracranial pressure and potential impairment of brain development. Additionally, the abnormal closure can lead to distinctive head shapes, which may vary depending on which sutures are involved. Craniosynostosis can occur in isolation or as part of syndromic conditions such as Crouzon, Apert, Carpenter, Chotzen, or Pfeiffer syndrome, which may present with other physical abnormalities. The condition is categorized into simple craniosynostosis, where only one suture is affected, and complex craniosynostosis, where multiple sutures are involved. The procedure described by CPT® Code 61556 involves a craniotomy specifically for the treatment of craniosynostosis, focusing on the frontal or parietal bone flap. This surgical intervention aims to relieve pressure on the brain and facilitate normal skull growth by creating a bone flap that can be repositioned as necessary.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 61556 is indicated for the treatment of craniosynostosis, which may present with the following conditions:

  • Premature Closure of Cranial Sutures - This condition leads to abnormal head shape and potential neurological impairment due to restricted brain growth.
  • Increased Intracranial Pressure - The early fusion of sutures can cause pressure on the brain, necessitating surgical intervention to alleviate this pressure.
  • Associated Syndromes - Craniosynostosis may occur as part of syndromic conditions such as Crouzon, Apert, Carpenter, Chotzen, or Pfeiffer syndrome, which may require surgical correction to address both cranial and associated abnormalities.

2. Procedure

The surgical procedure for CPT® Code 61556 involves several critical steps to effectively treat craniosynostosis:

  • Step 1: Skin Incision - A skin incision is made over the frontal or parietal bone, allowing access to the underlying structures. This incision is carefully planned to minimize scarring and facilitate healing.
  • Step 2: Scalp Flap Elevation - Following the incision, a scalp flap is elevated to expose the skull. This step is crucial for providing the necessary visibility and access to the cranial bones.
  • Step 3: Skull Exposure and Bone Marking - The skull is then exposed, and the surgeon marks the areas where bone cuts will be made. This careful planning is essential to ensure that the bone flap can be properly shaped and repositioned.
  • Step 4: Drilling Burr Holes - Burr holes are drilled along the lines of the planned bone cuts. These holes serve as entry points for the subsequent bone cuts and help to facilitate the removal of the bone flap.
  • Step 5: Making Bone Cuts - Using a craniotome or saw, the surgeon makes bone cuts to connect the burr holes. This step is critical for creating a bone flap that can be elevated and repositioned.
  • Step 6: Elevating the Bone Flap - The bone flap is carefully elevated, allowing the surgeon to access the underlying brain tissue and assess the need for any additional interventions.
  • Step 7: Repositioning the Bone - The bone is repositioned as necessary to accommodate normal brain growth and to allow for the remodeling of the skull. This step is vital for ensuring that the skull can develop appropriately post-surgery.
  • Step 8: Securing the Bone Flap - The bone flap is secured in place using miniplates and screws as needed, ensuring stability and proper alignment during the healing process.
  • Step 9: Closing Incisions - Finally, the incisions are closed in layers to promote optimal healing and minimize complications.
  • Step 10: Post-Operative Care - After the procedure, the infant is placed in a custom-made helmet designed to help reshape the skull as bone growth occurs, supporting the recovery process.

3. Post-Procedure

Post-procedure care following a craniotomy for craniosynostosis involves monitoring the infant for any signs of complications, such as infection or increased intracranial pressure. The infant will typically be placed in a custom-made helmet to assist in reshaping the skull as it heals and grows. Follow-up appointments are essential to assess the healing process and ensure that the skull is developing normally. Parents or caregivers will receive specific instructions regarding care at home, including how to manage the surgical site and recognize any concerning symptoms that may require immediate medical attention.

Short Descr INCISE SKULL/SUTURES
Medium Descr CRANIEC CRANIOSYNOSTOSIS FRONT/PARIET BONE FLAP
Long Descr Craniotomy for craniosynostosis; frontal or parietal bone flap
Status Code Active Code
Global Days 090 - Major Surgery
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P1G - Major procedure - Other
MUE 1
CCS Clinical Classification 1 - Incision and excision of CNS

This is a primary code that can be used with these additional add-on codes.

69990 Addon Code MPFS Status: Restricted APC N ASC N1 PUB 100 CPT Assistant Article 1Microsurgical techniques, requiring use of operating microscope (List separately in addition to code for primary procedure)
Date
Action
Notes
1991-01-01 Added First appearance in code book in 1991.
Code
Description
Code
Description
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"