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02
Nov 2026

Treatment Authorization Request (TAR) for Medi-Cal: 50-1 Form Guide for Providers

treatment authorization request

A Medi-Cal treatment authorization request can affect whether a service is authorized and whether a provider can pursue payment. Before care is delivered or continued, revenue-cycle teams should identify the applicable authorization pathway, form and payor.

Key Takeaways

  • Identifying the correct Medi-Cal authorization pathway before services begin helps protect both authorization approval and payment rights.
  • Revenue-cycle teams should confirm the applicable form, typically the 50-1, and the responsible payor early in the authorization process.
  • Treatment authorization requests apply to care not yet delivered and to services already underway that require continued approval.
  • Preserving documentation of the submission, approval and denial of each treatment authorization request supports later reimbursement disputes.
  • Providers that understand TAR requirements can address authorization gaps before they become payment denials.

The form alone does not establish payment eligibility. DHCS states on Medi-Cal TAR forms that authorization does not guarantee payment, which remains subject to patient eligibility. Preserve the clinical basis, submission details and authorization response in the reimbursement record.

What a Medi-Cal Treatment Authorization Request Is and When Providers Must File One

A TAR requests authorization for specified Medi-Cal services. Before submitting, check the applicable DHCS policy, Medi-Cal provider manual and service criteria to determine whether authorization is required. Requirements and workflows depend on the service and whether the provider bills fee-for-service or works through a managed care plan.

Defining the TAR as a Reimbursement-Risk Document

DHCS consultants adjudicate fee-for-service TARs under federal and state regulations and DHCS policy. They may approve a request as submitted, approve it with changes, deny it or defer it. Treat the submission as a record connecting the requested service to its clinical rationale, supporting documentation and requested period. Incomplete or inconsistent information can leave the need for care unclear and create reimbursement risk.

Services That Require Authorization Versus Core Services That Do Not

Authorization requirements are service-specific. Before care, check coverage and authorization criteria in the relevant Medi-Cal provider manual and DHCS Manual of Criteria for Medi-Cal Authorization. Verify the billing program, procedure or item, provider type and applicable limits. If the rule is unclear, document the source reviewed and seek clarification through the appropriate Medi-Cal channel; do not rely on prior approval for a different service.

Initial TARs, Reauthorization TARs and From-Through Dates

An initial request seeks authorization for a proposed service; a reauthorization request addresses continued services when a new authorization period is needed. Match the requested from-through dates to the clinical plan and supporting records. For ongoing care, retain progress documentation explaining why services remain necessary. A date mismatch or unsupported continuation can complicate review and claims alignment.

Core Versus Regionalized Services: Where Each Request Goes

Verify whether the service goes through the applicable DHCS fee-for-service process or a regional arrangement, then follow that program’s instructions. Record the responsible entity, submission channel and routing guidance. This helps prevent a complete clinical request from stalling at the wrong reviewer.

How Managed Care Plan Rules Differ From Fee-for-Service DHCS TARs

A fee-for-service TAR follows DHCS requirements; managed care services may instead follow the plan’s authorization process and contract terms. Confirm the member’s coverage, responsible payor, criteria, submission method and appeal instructions with the plan. Preserve its response separately from DHCS documentation.

The TAR Form Family: Completing the 50-1 and Knowing When 18-1, 20-1 and 50-3 Apply

Form Comparison: TAR 50-1, Request for Extension of Stay (18-1), Long Term Care TAR (20-1) and Vision Care TAR (50-3)

DHCS identifies different forms for services and provider settings. Most medical and pharmacy providers use the 50-1. Inpatient providers use the 50-1 and the 18-1 Request for Extension of Stay in Hospital. Long Term Care and Subacute Care providers use the 20-1. The 50-3 is the Vision Care TAR. Check current DHCS forms and instructions before submitting.

Form Use identified in the research Provider check
50-1 Most medical and pharmacy authorization requests Confirm the service and current form instructions.
18-1 Inpatient request for extension of stay, used with the 50-1 Verify the stay information and supporting clinical record.
20-1 Long Term Care and Subacute Care TARs Use the form designated for the provider setting.
50-3 Vision Care TAR Confirm that the request falls within the vision-care process.

Step-by-Step Guide to Completing the 50-1 for Medical and Pharmacy Services

Use the current DHCS 50-1 and its instructions. Identify the beneficiary, provider and requested service using applicable records. State the clinical reason and include documentation addressing the authorization criteria. Specify requested dates and units or quantity, as applicable, and check that supporting records describe the same service and period. Review the form for completeness and retain a copy with its attachments.

Field-Level Completion Errors That Trigger Denials and Deferrals

Check for missing identifiers, conflicting dates, unclear service descriptions and absent clinical support. These gaps can impede matching, obscure the period requested or leave criteria unaddressed. They are document-quality risks, not automatic decision rules. Compare each entry with the underlying record and current DHCS instructions.

Transmittal Forms and Header Requirements for Paper Submission

For paper filing, follow current DHCS instructions for transmittal materials and form headers. Check that the packet identifies the provider and beneficiary, includes the correct TAR form and contains all supporting pages. Keep a complete copy and any delivery or receipt record. A cover sheet does not correct missing or inconsistent information on the request.

Submitting the TAR: eTAR Through the Medi-Cal Provider Portal and Paper Alternatives

For fee-for-service Medi-Cal TARs, select the route described in current DHCS instructions for the service and provider type. Use the Medi-Cal Provider Portal’s electronic TAR process where available or submit paper forms under DHCS requirements. Check that the form, records and service details agree. Retain the complete submission and its delivery date and method.

Electronic Submission Guidelines and Portal Requirements

Follow current portal instructions to enter the beneficiary, provider, service and requested period. Attach clinical documentation addressing the authorization criteria, review the electronic summary and save the confirmation or other submission record. For paper filing, use the current DHCS form and transmittal instructions, keep every page and record the submission date. Both routes require a complete, consistent record.

Resubmission When the Rendering Provider Changes

If the rendering provider changes after submission or approval, check DHCS instructions and authorization details to determine whether a correction, new request or other action is required. Confirm that the authorization names the provider who will render and bill for the service. Keep the original request, any amended submission and the response together, with notes documenting the change and action taken.

Returned and Forwarded TARs: What Each Status Requires

Read the notice to distinguish a returned submission from one forwarded for review. For a returned item, identify the stated issue and follow correction or resubmission instructions. A forwarded item indicates further handling, not approval. Record the notice date, status, requested action and response instructions. If the next step is unclear, consult relevant DHCS guidance before changing the request.

Tracking TAR Status and Matching Authorization Numbers to Claims

After adjudication, record the authorization number, approved service details, provider and dates in the claim follow-up system. Before billing, compare the claim with the authorization, including service and period. DHCS TAR forms state that payment remains subject to patient eligibility. A documented match helps distinguish authorization, claim-data and eligibility issues.

  • Retain the submitted request, attachments and submission confirmation or delivery record.
  • Log status notices, dates and any required follow-up.
  • Match the authorization number and approved details to the claim before billing.

Reading the Adjudication Response: Approvals, Deferrals and Denials

DHCS consultants adjudicate fee-for-service TARs under federal and state regulations and DHCS policy. They may approve the request as submitted, approve it with modifications, deny it or defer it. Read the full response: approved services, dates or terms may differ from the submission. Record the decision and set the next step for billing, clinical operations or follow-up.

What Each TAR Adjudication Decision Means for Payment

An approval as requested supports billing within its terms, subject to eligibility and other payment requirements. For an approval as modified, compare the authorized scope with the planned service and claim. A denial does not authorize the requested service under that decision. A deferral requires further review or information and is not final approval. Preserve the response with the submission and ensure staff follow the decision issued.

Responding to a Deferral: Documentation Standards That Cure It

Start with the reason in the deferral notice. Identify missing or unclear information and provide records that address it, such as relevant clinical notes or clarification of the service and period. Check supplemental documentation against the original request and follow the notice’s submission instructions. Retain the notice, response materials and proof of resubmission. Organize the response around the issue DHCS identified rather than sending an unindexed chart.

Aid Paid Pending for Reauthorization TARs

When a reauthorization is disputed, determine whether Aid Paid Pending applies under Medi-Cal rules and the specific circumstances; do not treat it as automatic. Confirm requirements and deadlines through authoritative DHCS guidance, document the eligibility analysis and preserve the reauthorization, decision notice and service records. Coordinate continuity of care and billing with the teams responsible for the beneficiary and claim.

Building the Appeal Record: A Provider-Side Playbook After a TAR Denial

After a Medi-Cal authorization denial, the provider’s record should show what was requested, which criteria applied and how clinical facts address them. Build the record when preparing the request. DHCS states that fee-for-service requests are adjudicated under federal and state regulations and DHCS policy. The Manual of Criteria for Medi-Cal Authorization and applicable provider manual provisions can help identify relevant standards. Record the criteria reviewed and connect each to supporting clinical documentation.

Mapping Clinical Justification to Adjudication Criteria From Day One

Organize the clinical rationale around the service, requested period and applicable criteria. For each criterion, identify a supporting record, such as an assessment, treatment plan or progress note, and make the connection clear. If the record does not address a criterion, ask the clinical team whether further documentation exists or the request needs clarification. A broad diagnosis or unindexed chart is not a substitute for a focused explanation.

Evidence to Preserve: What Turns a Denied TAR Into a Reimbursable Dispute

Keep the completed form, attachments, submission confirmation, response and follow-up correspondence together. Preserve supporting clinical records, the criteria reviewed and dated records of corrections or supplemental materials. After denial, retain the full notice and identify its rationale. This file lets the team compare the decision with the request and evidence, while distinguishing authorization issues from claim, eligibility and payment questions.

Appeal Deadlines and Escalation Triggers for Revenue-Cycle Teams

Use the denial notice and current DHCS instructions to identify the review route, requirements and deadline. Do not assume another program’s procedure applies. Assign an owner, record the notice date and calculate the response date under the governing instructions. Escalate internally if the rationale is unclear, the record is incomplete or service and authorization terms appear inconsistent. Preserve evidence of each action and submission.

Consider provider-side legal review when a contested decision raises a recurring reimbursement issue, presents a material dispute over governing requirements or remains unresolved after the applicable administrative process. Counsel can assess the record, relevant authority and procedural options. The Law Offices of Stephenson, Acquisto & Colman addresses Medi-Cal and Medicaid payment disputes for healthcare providers. This educational information is not legal advice; a provider’s circumstances require individual review.

Frequently Asked Questions

What triggers a treatment authorization request for a Medi-Cal service?

A treatment authorization request is triggered when a provider proposes a Medi-Cal service that requires prior authorization under DHCS policy before care is delivered or continued. Authorization requirements are service-specific, so providers should check the applicable Medi-Cal provider manual and the DHCS Manual of Criteria for Medi-Cal Authorization, verify the billing program, procedure, provider type and applicable limits, and confirm whether the claim follows fee-for-service or a managed care plan’s process.

What does a TAR denial mean for the underlying claim?

A TAR denial means DHCS or the managed care plan did not authorize the requested service for the period submitted, which creates reimbursement risk for the related claim. Authorization alone does not guarantee payment, since DHCS states on TAR forms that payment remains subject to patient eligibility. Providers should preserve the clinical basis, submission details and authorization response in the reimbursement record.

How does a provider challenge a TAR denial that was clinically supported?

A provider challenges a clinically supported TAR denial by confirming the responsible payor’s appeal instructions, then submitting the denial response with the clinical documentation, form entries and supporting records that address the applicable authorization criteria. Managed care plan appeals follow the plan’s contract terms and must be preserved separately from DHCS fee-for-service documentation.

Which DHCS TAR form should a provider use: 50-1, 18-1, 20-1 or 50-3?

Form selection depends on the service and provider setting. Most medical and pharmacy providers use the 50-1. Inpatient providers use the 50-1 with the 18-1 Request for Extension of Stay in Hospital, Long Term Care and Subacute Care providers use the 20-1, and vision care requests use the 50-3. Check current DHCS forms and instructions before submitting.

What field-level errors cause Medi-Cal TAR denials or deferrals?

Missing identifiers, conflicting dates, unclear service descriptions and absent clinical support can impede matching, obscure the requested period or leave authorization criteria unaddressed. These are document-quality risks rather than automatic decision rules, so compare each form entry against the underlying record and current DHCS instructions before submission.

How do managed care plan authorization rules differ from DHCS fee-for-service TARs?

A fee-for-service TAR follows DHCS requirements, while managed care services may instead follow the plan’s authorization process and contract terms. Providers should confirm the member’s coverage, responsible payor, criteria, submission method and appeal instructions with the plan, and preserve the plan’s response separately from DHCS documentation.

What is the difference between an initial TAR and a reauthorization TAR?

An initial TAR seeks authorization for a proposed service, while a reauthorization TAR addresses continued services when a new authorization period is needed. Providers should match the requested from-through dates to the clinical plan and supporting records, and retain progress documentation explaining why ongoing services remain medically necessary.

About the Author

Founded in 1989 by Managing Partner Joy Stephenson-Laws, the Law Offices of Stephenson, Acquisto & Colman (SAC) is the leader in healthcare reimbursement law. SAC addresses claim denials, underpayments and contract disputes with commercial and government payors, from managed care and Medicare to Medi-Cal, Medicaid and workers’ compensation. Its full-time team of attorneys, nurses and physicians practices law in 37 states from offices in Glendale, San Diego and Pleasanton, California, and Chicago, Illinois. Built largely on word-of-mouth referrals, SAC is known for its stellar recovery record and commitment to client service.

The institutional editorial team writes for hospital and healthcare-provider finance, revenue-cycle, managed-care and in-house counsel audiences. Educational content is not a promise of any recovery or result.

Last reviewed: October 31, 2026 by the Law Offices of Stephenson, Acquisto & Colman (SAC) Team

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