C9818 Insurance Policy Changes

HCPCS C9818 is officially defined as "Suzetrigine, oral, 1 mg." HCPCS C9818 is referenced in 8 tracked payer policy changes from Medicare/CMS - Transmittals, Health Net, and 4 other payers. For billers and coders, staying current on payer-specific coverage criteria, reimbursement rules, and prior-authorization requirements for HCPCS C9818 is critical to clean claim submission. Each entry below links to the full policy analysis with effective dates and action steps.

Medicare/CMS - Transmittals · Effective Jul 1, 2026High impact
R13844CP: July 2026 Integrated Outpatient Code Editor (I/OCE) Specifications Version 27.2
The July 2026 Integrated Outpatient Code Editor (I/OCE) Specifications Version 27.2 take effect July 1, 2026, with implementation on July 6, 2026. Unless otherwise specified, the effective date is the date of service. Edit 139 returns a claim to the provider at the line level when a HCPCS code is reported with modifier 93 or 95 and is not on the CMS Telehealth list. Edit 140 returns a claim to the provider at the line level when a non-BLA skin substitute product is reported with modifier JW or JZ. Modifier AC is added, and many HCPCS codes, APC assignments and status indicators change, including the deletion of HCPCS codes 0029U, 0031U, 0423U, 0577U and C9309 effective July 1, 2026.
Health Net · Effective Apr 1, 2026High impact
26-630 Updates to Prior Authorization Requirements
Health Net has updated prior authorization requirements with immediate changes to Medi-Cal incontinence supplies (PA only required beyond 186 units/month or $165/month limit) and new PA requirements for multiple services including advanced imaging, genetic testing, neuro stimulators, medications, and orthotics effective April 1, 2026.
Blue Cross Blue Shield of Rhode Island · Effective Apr 1, 2026High impact
Additional HCPCS Level II Code Changes and Modifier Changes
Blue Cross Blue Shield of Rhode Island updated HCPCS Level II code coverage and payment rules effective April 1, 2026. Multiple codes have new coverage designations including newly covered codes, non-covered codes, medical review requirements, and pharmacy benefit changes.
BCBS Michigan · Effective Apr 1, 2026High impact
HCPCS 1st-quarter update: New, deleted codes
Blue Cross Blue Shield of Michigan has implemented its Q1 2026 HCPCS code updates, adding 56 new codes and deleting 6 codes effective April 1, 2026. Most new skin substitute codes (A2040-A2045, Q4418-Q4440) are not covered, while new drug/injection codes (J-codes) and COVID-19 related codes are generally covered.
Texas Medicaid · Effective Apr 1, 2026High impact
First Quarter 2026 HCPCS Updates for Texas Medicaid
Texas Medicaid is implementing first quarter 2026 HCPCS updates effective April 1, 2026, adding new covered and non-covered procedure codes with specific age limitations and prior authorization requirements. Several existing codes are being discontinued with direct replacements required.
Texas Medicaid · Effective Apr 1, 2026High impact
First Quarter 2026 HCPCS Updates for the CSHCN Services Program
Texas Medicaid CSHCN Services Program is implementing Q1 2026 HCPCS updates effective April 1, 2026. Multiple codes are being added as benefits (pending rate hearings), added as non-covered, or discontinued entirely. Several new codes require prior authorization and have age restrictions.
Indiana Medicaid (IHCP) · Effective Apr 1, 2026Medium impact
BT202649: Coverage and billing information for the April 2026 quarterly HCPCS codes update
The Indiana Health Coverage Programs (IHCP) set coverage and billing information for procedure codes added in the April 2026 quarterly HCPCS update, effective for dates of service on or after April 1, 2026. Codes marked noncovered are not covered for any IHCP program. Pricing for the new codes depends on CMS fee schedules that were still awaiting final posting, and claims submitted before pricing is entered into the claim-processing system may initially be denied.
Indiana Medicaid (IHCP) · Effective Apr 1, 2026Medium impact
BT202678: Updated coverage and billing information for the April 2026 quarterly HCPCS codes update
The Indiana Health Coverage Programs (IHCP) set coverage and billing information for procedure codes in the April 2026 quarterly HCPCS update, effective for dates of service on or after April 1, 2026. This bulletin replaces the originally published update in IHCP Bulletin BT202649, and it sets prior authorization criteria for J3404, J9183, and the Q5161 and Q5162 biosimilars. Codes discontinued effective March 31, 2026 have no alternative codes identified by the IHCP, and codes marked allowed for podiatrists (provider specialty 140) are limited to that provider specialty.

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REFERENCE DATA

Payers with rules2

Payers requiring prior auth2

Fidelis Care · Effective November 1, 2026
Prior authorization required
Fidelis Care Metal-Level Products authorization grid
BCBS Arizona · Effective October 1, 2026
Prior authorization required
AZ Blue Standard Prior Authorization Requirements Code List (Updated 10/01/2026)

FREQUENTLY ASKED QUESTIONS

Does BCBS Arizona require prior authorization for C9818?

BCBS Arizona lists C9818 on AZ Blue Standard Prior Authorization Requirements Code List (Updated 10/01/2026) for commercial plans (list dated October 1, 2026). Verify with the payer before scheduling.

Does Fidelis Care require prior authorization for C9818?

Fidelis Care lists C9818 on Fidelis Care Metal-Level Products authorization grid for exchange plans (list dated November 1, 2026). Verify with the payer before scheduling.

What insurance policy changes affect HCPCS C9818?

There are 8 tracked policy changes affecting HCPCS C9818, including updates from Medicare/CMS - Transmittals, Health Net, Blue Cross Blue Shield of Rhode Island. Each change may modify coverage criteria, reimbursement rates, or prior-authorization requirements.

Which payers have updated policy for HCPCS C9818?

Payers that have issued tracked updates for HCPCS C9818 include: Medicare/CMS - Transmittals, Health Net, Blue Cross Blue Shield of Rhode Island, BCBS Michigan, Texas Medicaid, Indiana Medicaid (IHCP).

How do I get notified when HCPCS C9818 policy changes?

Create a free account at PolicyChanges.app and save a search filtered to HCPCS C9818. You will get an email when new policy changes reference this code: daily or weekly, your choice, on every plan.

Why do payers change policies for HCPCS C9818?

Payers revise policies for individual billing codes to align with updated clinical guidelines, CMS rule changes, fraud and abuse prevention measures, or network cost-management goals. Changes can affect medical necessity criteria, place-of-service restrictions, bundling rules, or whether a code requires prior authorization.

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Prior authorization lists, coverage criteria, NCCI edits and Medicare coverage articles for C9818 in one place.

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All billing codes J3590 C9399 J3490 99215 99213 99202

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R13844CP: July 2026 Integrated Outpatient Code Editor (I/OCE) Specifications Version 27.2

26-630 Updates to Prior Authorization Requirements

Additional HCPCS Level II Code Changes and Modifier Changes

HCPCS 1st-quarter update: New, deleted codes

First Quarter 2026 HCPCS Updates for Texas Medicaid

First Quarter 2026 HCPCS Updates for the CSHCN Services Program

BT202649: Coverage and billing information for the April 2026 quarterly HCPCS codes update

BT202678: Updated coverage and billing information for the April 2026 quarterly HCPCS codes update

Prior authorization required