Billing & Reimbursement

Medicare (Original / FFS) Provider Portal:

Use Medicare (Original / FFS)

Why this matters

Medicare (Original / FFS) portal work is easier to manage when eligibility findings, authorization status, claim follow-up, denial notes, and documentation ownership stay connected to the admission.

For treatment centers

Payer portals answer part of the workflow

The Medicare (Original / FFS) portal may show eligibility, authorization status, claims, or messages from the payer. helps your team keep those findings connected to the admission, documentation, follow-up, and billing work around them.

Where helps

If your facility uses, VOB details, authorization status, payer routing, claim follow-up, denial notes, and documentation ownership can travel with the record instead of living across screenshots, spreadsheets, and inboxes.

What stays with the payer

Medicare (Original / FFS) still controls portal access, coverage rules, authorization decisions, and payment decisions.

Portal at a glance

Original Medicare fee-for-service guide for behavioral health providers covering Part A and Part B, MACs, PECOS enrollment, OTP benefit, and claims.

Provider portal: https://www.cms.gov/about-cms/what-we-do/medicare
Insurance profile: View Medicare (Original / FFS) profile →
Also known as: Original Medicare — Fee-for-Service (Parts A and B) · Centers for Medicare & Medicaid Services (CMS)
Parent company: Centers for Medicare & Medicaid Services (CMS)
Credentialing context: PECOS enrollment (Provider Enrollment, Chain, and Ownership System) via the Medicare Administrative Contractor (MAC) for your jurisdiction · Typically 60-120 days after submission of a complete CMS-855 application
Operating states: ALL

Daily portal workflows for treatment centers

Eligibility and VOB

Start with active eligibility, network status, cost-share, and whether the levels of care listed on the Medicare (Original / FFS) profile are covered for the member: Inpatient psychiatric hospital services (Part A) · Partial Hospitalization Program (Part B) · Intensive Outpatient Program (Part B) · Outpatient psychiatric and psychological services (Part B) · Opioid Treatment Program services (Part B, 42 CFR 410.67) · Medication-Assisted Treatment (Part B, office-based) · Skilled nursing and hospice (Part A, when behavioral health criteria met).

Prior authorization

Use the profile criteria as the intake checklist before submitting an authorization request: CMS National Coverage Determinations (NCDs) · Local Coverage Determinations (LCDs) issued by the MAC · CMS Internet-Only Manuals (Benefit Policy Manual Chapters 6, 9, 15). Keep the clinical packet aligned with the portal's required fields.

Claim status and follow-up

After claim submission, use the portal to tie each follow-up back to the member eligibility response, authorization record, rendering or facility identifiers, and the payer routing confirmed during VOB.

Credentialing updates

Keep portal access aligned with credentialing context from the profile: PECOS enrollment (Provider Enrollment, Chain, and Ownership System) via the Medicare Administrative Contractor (MAC) for your jurisdiction · Typically 60-120 days after submission of a complete CMS-855 application. New locations, tax IDs, and roster changes should not wait until a claim denies.

What to verify before admission

Confirm active coverage, network status, plan type, member responsibility, and the specific payer route attached to the member's plan.
Match the requested level of care against the profile's covered levels of care: Inpatient psychiatric hospital services (Part A) · Partial Hospitalization Program (Part B) · Intensive Outpatient Program (Part B) · Outpatient psychiatric and psychological services (Part B) · Opioid Treatment Program services (Part B, 42 CFR 410.67) · Medication-Assisted Treatment (Part B, office-based) · Skilled nursing and hospice (Part A, when behavioral health criteria met).
Prepare clinical documentation against the listed medical necessity criteria: CMS National Coverage Determinations (NCDs) · Local Coverage Determinations (LCDs) issued by the MAC · CMS Internet-Only Manuals (Benefit Policy Manual Chapters 6, 9, 15).
Check whether the member's state, product, or network arrangement changes portal access, payer routing, or authorization requirements.
Use the Medicare (Original / FFS) insurance profile as the source page for credentialing, coverage, and payer-specific operating context.

Authorization and documentation notes

Treat the portal workflow as an admission-control checkpoint: the eligibility response, authorization request, clinical packet, and claim setup should all tell the same story before the first billed date of service.

For Medicare (Original / FFS), the profile lists medical necessity criteria that should shape the clinical packet: CMS National Coverage Determinations (NCDs) · Local Coverage Determinations (LCDs) issued by the MAC · CMS Internet-Only Manuals (Benefit Policy Manual Chapters 6, 9, 15). Build the request around those criteria instead of relying on a generic treatment summary.

Credentialing context from the profile is also operational context for the portal: PECOS enrollment (Provider Enrollment, Chain, and Ownership System) via the Medicare Administrative Contractor (MAC) for your jurisdiction · Typically 60-120 days after submission of a complete CMS-855 application. Keep provider, facility, location, and tax ID records synchronized before claims go out.

Profile FAQs to keep nearby

How is Original Medicare different from Medicare Advantage for behavioral health billing?

Original Medicare (Parts A and B) is the traditional fee-for-service program administered directly by [CMS](https://www.cms.gov) through regional Medicare Administrative Contractors (MACs). Claims submit to the MAC and pay at statutory fee schedules. Medicare Advantage (Part C) plans are private insurance plans contracted by CMS to administer Medicare benefits — they have their own networks, prior authorization rules, and payer IDs. Providers must enroll in Original Medicare through [PECOS](https://pecos.cms.hhs.gov) regardless of whether they plan to see Medicare Advantage members; then separately contract with each Medicare Advantage plan. This guide covers Original Medicare only.

How do I enroll a behavioral health facility or clinician in Medicare?

Medicare enrollment is managed through [PECOS](https://pecos.cms.hhs.gov), the CMS Provider Enrollment, Chain, and Ownership System. Individual clinicians (psychiatrists, psychologists, clinical social workers, licensed mental health counselors, mental health counselors, marriage and family therapists, physician assistants, nurse practitioners) submit CMS-855I. Facility-type providers such as certified opioid treatment programs submit CMS-855A or CMS-855B depending on the entity type. Applications route to the MAC for your jurisdiction. Processing typically runs approximately 60 to 120 days. Note that Medicare added licensed mental health counselors and marriage and family therapists as independently enrollable providers effective January 1, 2024 under the Consolidated Appropriations Act.

What is the Medicare Part B Opioid Treatment Program (OTP) benefit?

Effective January 1, 2020, Medicare Part B covers opioid treatment program services through a bundled payment methodology defined in [42 CFR 410.67](https://www.ecfr.gov/current/title-42/chapter-IV/subchapter-B/part-410/subpart-B/section-410.67). The OTP benefit covers FDA-approved medications for opioid use disorder (methadone, buprenorphine, naltrexone), substance use counseling, individual and group therapy, toxicology testing, intake activities, and periodic assessments. OTPs must be [SAMHSA-certified](https://www.samhsa.gov/medications-substance-use-disorders) and enroll in Medicare through PECOS. The bundled rate is published annually in the Physician Fee Schedule final rule. HCPCS G-codes G2067-G2080 identify the specific OTP bundles.

Claims, denials, and follow-up

Claims and status workflows vary by plan, state, and network arrangement. Start with the Medicare (Original / FFS) provider portal or the payer instructions listed on the insurance profile, then confirm member-specific payer routing, authorization requirements, and claim format before billing.

Before claim submission, confirm the payer route, authorization number, billed level of care, rendering and facility identifiers, date range, and whether another payer is primary. When a claim stalls, work backward from the portal record to the VOB, authorization, and documentation packet.

Where fits after the portal

The Medicare (Original / FFS) portal may answer one part of the case. helps treatment centers keep portal findings connected to admissions, clinical documentation, authorization status, claim follow-up, and denial work.