Modifiedblue cross blue shield - kansasPolicy N/A

Adjustable Cranial Orthoses for Positional Plagiocephaly and Craniosynostoses

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This policy governs coverage criteria for the use of adjustable cranial orthoses (helmets/bands) in infants with positional plagiocephaly (nonsynostotic) and as postoperative therapy following cranial vault remodeling for craniosynostosis, affecting BCBSKS members and their providers.

Policy Summary

Payerblue cross blue shield - kansas

PolicyAdjustable Cranial Orthoses for Positional Plagiocephaly and Craniosynostoses

Policy CodePolicy N/A

Change TypeReclassification to experimental/investigational for statements B and Dother criteria clarified

Effective DateJul 13, 2004

Last ReviewJun 15, 2026

Next Review DateJun 15, 2026

Key ActionObtain prior authorization with documentation of age, ≥2 months failed conservative therapy when applicable, and objective cephalic index measurement to support coverage.

SourceLink

POLICY UPDATE CHANGES

Statements B and D changed from 'not medically necessary' to 'experimental / investigational' in the Policy section.

Item C was updated previously to specify age range 3–18 months and documented failure of conservative therapy and cephalic index criteria when made medically necessary.

3–18 moage range specified for helmet treatment of plagiocephaly

≥2 mo

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Modifiedblue cross blue shield - kansasPolicy N/A

Adjustable Cranial Orthoses for Positional Plagiocephaly and Craniosynostoses

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Policy Summary

Payerblue cross blue shield - kansas

PolicyAdjustable Cranial Orthoses for Positional Plagiocephaly and Craniosynostoses

Policy CodePolicy N/A

Change TypeReclassification to experimental/investigational for statements B and Dother criteria clarified

Effective DateJul 13, 2004

Last ReviewJun 15, 2026

Next Review DateJun 15, 2026

Key ActionObtain prior authorization with documentation of age, ≥2 months failed conservative therapy when applicable, and objective cephalic index measurement to support coverage.

SourceLink

POLICY UPDATE CHANGES

Statements B and D changed from 'not medically necessary' to 'experimental / investigational' in the Policy section.

Item C was updated previously to specify age range 3–18 months and documented failure of conservative therapy and cephalic index criteria when made medically necessary.

3–18 moage range specified for helmet treatment of plagiocephaly

≥2 mo

minimum documented conservative therapy duration

≥2 SDobjective cephalic index threshold

84RCT size (HElmet trial)

97799, S1040example procedure codes

Coverage Criteria

Postoperative cranial orthosis (craniosynostosis)

Covered when ALL of the following are met for postoperative use:

Postoperative indication: Use of an adjustable cranial orthosis following cranial vault remodeling surgery for craniosynostosis

Policy A: medically necessary following cranial vault remodeling surgery

Adjustable cranial orthosis for positional plagiocephaly/brachycephaly

Covered when ALL of the following are met:

Age: Individual is between 3 months and 18 months old3–18 months

Policy C.1; see Policy Guidelines and Table PG1 for age-specific cephalic index norms

Conservative therapy failure: Documented failure of conservative therapy (repositioning and physical therapy) of at least 2 months' duration>=2 months

Policy C.2; conservative management (repositioning/physical therapy) is typically tried before helmet therapy

Objective cranial measurement: Cephalic index at least 2 standard deviations above or below the mean for the appropriate gender and age>=2 SD from mean

Policy C.3; refer to Table PG1 for age- and gender-specific values

Medical necessity criteria (implied)

Covered when ALL of the following are met (implied from evidence and guideline-aligned statements):

Appropriate clinical candidate: Infant with positional plagiocephaly or postoperative craniosynostosis who is an appropriate candidate for helmet therapy (for plagiocephaly: typically after trial of repositioning unless deformity severity or immobility justifies immediate orthosis; for craniosynostosis: postoperative adjunct to cranial vault remodeling).see anthropometric severity indices

Derived from clinical context and trial enrollment criteria (eg, oblique diameter difference index >=108% or cranioproportional index >=95% used in RCTs); very severe deformities excluded from some trials

Documentation of conservative therapy: For positional plagiocephaly, a documented trial of repositioning and/or physical therapy is typically required before initiating orthosis unless deformity severity or inability to reposition justifies immediate orthosis.typically >=2 months when applicable

Derived from policy statements that most cases may auto-correct and orthosis is usually requested after failed repositioning

Coverage summary and prior criteria

Summary of clinical stance and prior criteria

Guideline-based recommendation: Congress of Neurological Surgeons (2016) guideline gave level II recommendations supporting helmet therapy for infants with persistent moderate to severe plagiocephaly after conservative treatment or presenting at an advanced age.

Supports use with specified criteria

Historical policy criteria (Item C): Previously required age 3–18 months, documented failure of conservative therapy for at least 2 months, and cephalic index at least 2 standard deviations from the mean for age/gender to consider orthosis medically necessary.age 3–18 months; >=2 months conservative therapy; >=2 SD cephalic index

Extracted from policy history where Item C was made medically necessary under these conditions

Policy reclassification: Statements B and D were revised from 'not medically necessary' to 'experimental / investigational' effective 06-15-2026; use of orthosis for synostosis without prior cranial vault remodeling remains classified as experimental/investigational.

Historical policy language stated that use of an adjustable cranial orthosis for synostosis in the absence of cranial vault remodeling surgery is considered experimental/investigational. The Policy section explicitly lists this situation as an exclusion and a basis for denial when cranial vault remodeling surgery has not been performed.

The policy currently classifies use of adjustable cranial orthoses for all indications not specifically listed in the Policy as experimental/investigational. This scope was reiterated in the Policy section and maintained through recent revisions to the policy language.

The HElmet randomized trial excluded infants with very severe deformation; examples of exclusion thresholds included an oblique diameter difference index >113% or a cranioproportional index >104%. The trial therefore did not address efficacy for those very severe deformities.

Policy revisions posted 05-14-2026 (effective 06-15-2026) updated the Policy section to reclassify certain items. Specifically, statements previously labeled as not medically necessary (Items B and D) were changed to experimental/investigational as part of the May 2026 update.

The Policy explicitly states that use of an adjustable cranial orthosis for synostosis without prior cranial vault remodeling surgery is considered experimental/investigational, and therefore is excluded from coverage in that clinical scenario.

A pragmatic multicenter RCT (the HElmet trial, N=84) found that at 24 months the change in anthropometric measures was similar between infants randomized to helmet therapy and those managed by the natural course; full recovery rates were 26% for orthoses versus 23% for observation. Systematic reviews continue to identify primarily observational studies with mixed results and high heterogeneity, limiting firm conclusions about benefit in routine practice.

Historically, the policy included language that declared use of adjustable cranial orthoses not medically necessary for indications not specifically outlined. Over successive updates the policy added specific medically necessary criteria (for example, age range and conservative therapy failure for plagiocephaly) and, most recently, reclassified some of the prior 'not medically necessary' statements to experimental/investigational during the May 2026 revision.

Coding and Codes

Regulatory product codemixed

MVA	FDA product code for cranial orthoses

Procedure/HCPCS codes listedCPT | HCPCS

97799	Unlisted physical medicine/rehabilitation service or procedure.
S1040	Cranial remolding orthotic, pediatric, rigid, with soft interface material, custom fabricated, includes fitting and adjustment(s).

Cephalic Index thresholds — age- and gender-specific means and SDs

Coverage thresholdCephalic index must be at least 2 standard deviations above or below the age- and gender-specific mean (use Table PG1 values).

Reference tableUse age- and gender-specific means and SDs from Table PG1 (see cephalic index values for male and female age bands).

Age bands in tableTable PG1 provides values for male and female at age 16 days–6 months and 6–12 months (means and ±1/±2 SDs).

How appliedCompare measured cephalic index (max width/length ×100) to the Table PG1 mean and SD for the patient’s gender and age; coverage requires ≥2 SD deviation.

Cephalic index threshold — historical policy criterion

Historical criterion

Provider Actions and Documentation Requirements

Prior Authorization

Obtain prior authorization to demonstrate medical necessity

Prior authorization is expected when demonstrating medical necessity per the Policy section: postoperative use following cranial vault remodeling is covered, and helmets for plagiocephaly are covered only when age, documented failed conservative therapy, and cephalic index criteria are met.

Prior Authorization

Show indication and severity with prior auth

When requesting prior authorization, document the indication clearly — either positional plagiocephaly with severity measurements and failed conservative therapy, or postoperative adjunctive use after cranial vault remodeling surgery.

Prior Authorization

Codes require documentation of meeting Policy criteria

Submitting claims for codes referenced in this policy requires prior authorization or documentation that the service was performed according to the Policy section; codes are medically necessary only if the enumerated criteria are met.

Background

Cranial orthoses are adjustable helmets or bands that reshape an infant's skull by applying pressure to prominences while permitting growth in flattened areas. They are used for positional plagiocephaly and as a postoperative adjunct after cranial vault remodeling for craniosynostosis, and are intended to guide cranial growth rather than fuse or surgically alter bony sutures.

Definitions

Cephalic index — definition

DefinitionCephalic index = (maximum head width ÷ head length) × 100, expressed as a percentage.

Measurement pointsMaximum width measured between the most lateral points of the parietal region (euryon); length from glabella to opisthocranion.

Comparison standardCompare the calculated percentage to normative, age- and gender-specific means and standard deviations (Table PG1).

Craniosynostosis — definition

DefinitionCraniosynostosis is premature fusion of cranial sutures leading to skull deformity (examples: scaphocephaly, trigonocephaly, unilateral coronal synostosis causing plagiocephaly, bicoronal synostosis causing brachycephaly).

Clinical impactMay result in functional deficits from increased intracranial pressure and specific craniofacial deformities depending on the fused suture.

Revision History

2026-05-14policy_revisionLatest

Policy language changed to reclassify Statements B and D from 'not medically necessary' to 'experimental / investigational' (effective 2026-06-15).

2019-04-11policy_revision

Item C was modified to require that use of an adjustable cranial orthosis for plagiocephaly be considered medically necessary only when the patient is 3–18 months old and after documented failure of conservative therapy of at least 2 months.

2018-01-01

Policy Summary

Payerblue cross blue shield - kansas

PolicyAdjustable Cranial Orthoses for Positional Plagiocephaly and Craniosynostoses

Policy CodePolicy N/A

Change TypeReclassification to experimental/investigational for statements B and Dother criteria clarified

Effective DateJul 13, 2004

Last ReviewJun 15, 2026

Next Review DateJun 15, 2026

Key ActionObtain prior authorization with documentation of age, ≥2 months failed conservative therapy when applicable, and objective cephalic index measurement to support coverage.

SourceLink

On This Page

Wear and follow-up plan: Planned orthosis wear of approximately 23 hours per day for several months with scheduled follow-up anthropometric assessments; for craniosynostosis, follow-up of 12–24 months is considered appropriate to demonstrate postoperative efficacy.23 hours/day; 12–24 months follow-up for craniosynostosis

Derived from typical wear prescriptions and guideline/outcome summaries

Material policy change noted in revisions

Previously required cephalic index at least 2 standard deviations above or below the mean for the appropriate gender and age as a condition for medical necessity (Policy Item C).

Policy historyItem C was revised to require age 3–18 months, ≥2 months conservative therapy, and cephalic index ≥2 SD from mean (see Coding/Policy history).

Application noteWhen used historically, the cephalic index criterion referenced Table PG1 values for age- and gender-specific means and SDs.

Step Therapy

Require ≥2 months of conservative therapy before coverage

A documented trial of conservative therapy (repositioning and/or physical therapy) of at least 2 months' duration is required before coverage for plagiocephaly in applicable cases.

Step Therapy

Try repositioning/physical therapy before orthosis when feasible

A trial of repositioning and/or physical therapy is typically recommended before initiating helmet therapy for positional plagiocephaly unless deformity severity or patient immobility justifies immediate orthosis.

Step Therapy

Conservative therapy is the recommended prior step for persistent deformity

Conservative therapy (repositioning and/or physical therapy) is recommended as the prior step for persistent moderate to severe plagiocephaly before considering helmet therapy, per guideline-aligned policy statements.

Documentation Required

Document age, failed conservative therapy, and cephalic index

For plagiocephaly coverage, include the patient's age (3–18 months), documentation of at least 2 months of failed conservative therapy, and objective cranial measurement demonstrating the cephalic index is ≥2 standard deviations from the mean for age and gender.

Documentation Required

Document cranial vault remodeling surgery for postoperative use

For postoperative use after cranial vault remodeling, include documentation that cranial vault remodeling surgery was performed to support medical necessity of the orthosis.

Documentation Required

Include trial of conservative care and baseline anthropometric measures

Document a trial of conservative management when applicable, provide pre-treatment anthropometric measures (eg, oblique diameter difference index, cranioproportional index, Argenta classification), and state the reason for selecting orthosis (failed repositioning or severity/immobility). For postoperative cases, document the type of craniosynostosis surgery and planned helmeting duration.

Billing Rule

Include specific procedure/device codes and supporting clinical documentation

Include appropriate procedure/device coding (eg, S1040 or 97799) and documentation showing the procedure met the Policy section clinical criteria to support coverage.

Denial Risk

Avoid orthosis for preoperative synostosis — likely denial

Use of an adjustable cranial orthosis for synostosis without prior cranial vault remodeling surgery is classified as experimental/investigational and is a likely basis for denial.

Denial Risk

Document adherence and tolerability—noncompliance may affect approval

Trials reported substantial noncompliance and early discontinuation of helmet therapy (eg, 23% of infants in the HElmet trial wore the device until 12 months), which may affect outcome demonstration and authorization decisions if tolerability or adherence is not documented.

Denial Risk

Submissions not meeting Policy criteria or for reclassified indications may be denied

Claims for the codes listed are medically necessary only if the service was performed according to the Policy section; recent policy revisions reclassified some uses to experimental/investigational and submissions for those indications may be denied.

ExamplesScaphocephaly (sagittal suture), trigonocephaly (metopic suture), unilateral coronal synostosis (asymmetric forehead/plagiocephaly), bicoronal fusion (brachycephaly).

Cephalic Index / Anthropometric indices

Cephalic IndexA cranial ratio (maximum width to length) used to quantify overall head shape and brachycephaly; compared to normative age- and gender-specific values.

Oblique diameter difference indexAn anthropometric index used to quantify plagiocephaly severity (used as enrollment threshold in clinical trials).

Cranioproportional indexIndex used to quantify brachycephaly and included in trial enrollment criteria (reported alongside other indices).

Positioning therapy — definition

DefinitionPositioning therapy is non‑surgical management including head repositioning and physical therapy to correct neck muscle imbalance and promote spontaneous correction.

Typical useUsually attempted before helmet therapy for positional plagiocephaly unless the child is too immobile or deformity severity justifies immediate orthosis.

Expected durationOften documented as a trial of at least 2 months of conservative measures prior to considering orthosis per policy history.

Conservative therapy — definition

DefinitionConservative therapy comprises non‑surgical management such as repositioning and physical therapy, typically tried for at least 2 months before considering cranial orthosis.

Policy requirementPolicy Item C historically required documented failure of ≥2 months of conservative therapy prior to helmet coverage for plagiocephaly (age 3–18 months).

When waivedConservative trial may be bypassed if deformity severity or patient immobility justifies immediate orthosis.

Cephalic index — policy use and historical threshold

Policy useCephalic index has been used historically in the policy to quantify brachycephaly, with coverage specified when the measurement is ≥2 standard deviations from the age‑ and gender‑specific mean.

Measurement basisValues and thresholds referenced Table PG1 for means and ±1/±2 SDs by age and gender.

PurposeProvided an objective anthropometric threshold to distinguish candidates for orthosis after conservative therapy failed.

Coding section revised (deleted CPT 97762, removed ICD-9 codes) and Policy Item C wording updated to reflect conditions for medical necessity for plagiocephaly treatment.

2016guideline_reference

Congress of Neurological Surgeons guideline issued providing level II recommendations for helmet therapy for infants with persistent moderate to severe plagiocephaly after conservative treatment or presenting at advanced age.

2019-05-04policy_update

Description, rationale, and references sections were updated (summary of 2022/2024/2026 revision history entries).