MassHealth Behavioral Health Claims: POSC or MBHP
By George Ruan • October 9, 2026
As of October 9, 2026. Before sending a therapy claim, verify the member’s service-date coverage and behavioral health administrator. Direct MassHealth professional claims have a POSC workflow; MBHP claims use its own route. Use the claims guide and administrator resources linked below. MassHealth eligibility verification instructions Professional claim submission job aid, April 2026 MBHP Getting Started
Sections
- Check the January 1, 2027 enrollment boundary
- Confirm the payer before opening a claim template
- How to start a direct MassHealth professional claim
- MBHP claims and other Carelon claims have different IDs
- Resolve a denial with the correct administrator
- Related MassHealth guides
- Get help with MassHealth billing setup
- Frequently Asked Questions
- Sources
Check the January 1, 2027 enrollment boundary
All Provider Bulletin 421 applies to claims for dates of service on or after January 1, 2027 when state or federal rules require a claim-listed provider to be enrolled. It includes attending, supervising and operating roles. The limited timing exception for ordered, referred or prescribed services is not a general 90-day grace period. Existing billing, rendering and ORP enrollment requirements still apply. All Provider Bulletin 421, corrected, October 1, 2026
Confirm the payer before opening a claim template
Recommended: compare the dated eligibility response, the administrator’s service coverage and the billing/rendering contract. If the member uses an ACO or MCO, verify its behavioral health arrangements. A state provider ID does not answer which managed-care administrator processes the service.
How to start a direct MassHealth professional claim
Open the professional claim template. In POSC, choose Manage Claims and Payments > Enter Single Claim > Professional Claim. Use the April 2026 job aid for the current field sequence. Professional claim submission job aid, April 2026
Screenshot source: MassHealth Professional Claims Submission job aid, page 1 (April 2026).
Match providers, service and other coverage. The job aid includes billing provider, member, rendering provider for group practices, service and coordination-of-benefits fields. Follow your LIBHC or Psychologist Manual for the payable codes and requirements. Professional claim submission job aid, April 2026 LIBHC Manual Psychologist Manual
Screenshot source: MassHealth Professional Claims Submission job aid, page 3 (April 2026).
Review the response and remittance. Recommended: save the submission reference, check claim status, and compare the eventual remittance with the submitted services. Use the official job-aid index for claim inquiries and remittance workflows. POSC job aids
MBHP claims and other Carelon claims have different IDs
MBHP’s August 2026 presentation lists electronic payer ID BHOMA for MBHP and BHOVO for other Carelon plan claims, with separate direct-entry portals. It lists a 90-calendar-day standard filing limit for MBHP; confirm applicable exceptions and contract instructions rather than applying that limit to all MassHealth claims. MBHP August 6, 2026 town hall
ProviderConnect supports MBHP claims, eligibility and authorization work. Network approval and portal registration are separate tasks. The current Getting Started page explains online registration; August 2026 instructions clarify that choosing claims submission presents a form that must be printed, signed and faxed for enablement. MBHP Getting Started MBHP August 6, 2026 town hall
Resolve a denial with the correct administrator
The August FAQ directs plan-specific billing and contracting questions to provider.relations.MA@carelon.com and MBHP clinical support to 800-495-0086. It says Carelon billing requirements vary by plan contract and line of business. MBHP August 6, 2026 town hall FAQ
Recommended: classify the denial as coverage, contract/provider enrollment, authorization, coding, filing or payment posting. Confirm which correction or appeal route applies and retain the original reference and deadline. Avoid submitting a new duplicate before checking the original claim status.
Related MassHealth guides
Get help with MassHealth billing setup
Bomi can help your therapy practice organize payer enrollment, portal permissions, eligibility checks and claims follow-up. The practice’s authorized administrator handles account permissions and approvals. See Bomi billing support.
Frequently Asked Questions
Can I send every MassHealth therapy claim through POSC?
No. Identify the service-date coverage and behavioral health administrator before choosing direct MassHealth, MBHP or another plan’s route.
What electronic payer ID does MBHP list?
The August 2026 town hall lists BHOMA for MBHP and distinguishes it from Carelon BHOVO. Confirm your clearinghouse configuration against the administrator.
Is MBHP’s filing limit the deadline for all MassHealth claims?
No. The presentation lists an MBHP standard limit. Other administrators and exception processes have their own instructions.
Sources
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