Ohio BWC C-9: Request for Medical Service

Ohio physicians of record and treating providers use this two-page request to get authorization for non-emergency services, including those given under the 60-day presumptive authorization, and to recommend additional allowed conditions or a changed diagnosis. It goes to the managed care organization for state-fund claims or to the self-insuring employer, and either must answer within set time limits or the request is deemed approved.

Who completes it

The physician of record or a treating provider completes Sections I to IV: injured worker details, requested services with CPT or HCPCS codes, any recommended additional conditions with a causality answer, and the signed provider block. The MCO records its decision in Section V and a self-insuring employer in Section VI.

How to fill it in

Section I: Injured worker

Enter the injured worker's name, BWC claim number and the date of injury or the date the occupational disease was contracted. The fax header at the top of page two also asks who the request is going to and the sender's phone and fax numbers, which the MCO or self-insuring employer uses to return its decision.

Section II: Requested services

Give the treating diagnosis for this request, including body part and levels, the dates the service begins and ends, and the date of the last exam or treatment. List each service with its CPT or HCPCS code, frequency and duration, and attach current reports, office notes with subjective and objective findings, and test results. Add the two-digit CMS site-of-service code if applicable, and name the rendering provider and service address, which is required.

Section III: Additional conditions

Complete only when recommending conditions be added to the claim. Give a narrative description (an ICD code is not required here) with location and site, and note any supporting diagnostic evidence such as an X-ray. Item 8 asks whether, based on the history, your clinical evaluation and expertise, the condition is causally related, directly or proximately, to the alleged accident or exposure. Check yes or no and attach an explanation.

Section IV: Physician/provider information

Mark whether you are the physician of record (POR) or a treating provider who is not the POR. Print, type or stamp the requesting provider's name and address, then sign. The signature, individual BWC provider number and report date are all mandatory, and signing certifies the information under a felony fraud warning.

Section V: MCO decision

The MCO marks the request approved with service dates, approved with disclaimer, amended, denied, pending, claim inactive, withdrawn or dismissed, or refers an additional-condition recommendation to BWC. A pending decision gives the provider 10 business days to send the requested documentation, and a denial can be disputed in writing with the MCO through alternative dispute resolution.

Section VI: Self-insuring employer

A self-insuring employer records whether medical treatment is approved or denied, with its name, signature and date. It must notify the submitting provider within 10 days of receipt or the authorization is deemed granted under Ohio Administrative Code 4123-19-03(L)(7). Recommendations for additional conditions are handled separately by the employer.

Common mistakes

  • Leaving out CPT or HCPCS codes, frequency or duration for the requested services; the instructions warn that missing CPT codes may delay processing.
  • Omitting the provider signature, individual BWC provider number or report date, all of which the form marks as mandatory.
  • Recommending an additional condition without attached supporting medical documentation and a written explanation of the causality opinion.
  • Not naming the provider who will render the service and the address where it will be given, which item 6 marks as required.
  • Submitting the C-9 after treatment has started without just cause, which can reduce reimbursement to 75 percent of the fee schedule.
  • Missing the 10-business-day window to answer a C-9-A; the MCO then decides without the records, or may dismiss the C-9 in an inactive claim.

Submitting and payment

How to submit it
Fax or mail it to the claim's assigned MCO when the employer is state-fund, or to the self-insuring employer, before starting non-emergency treatment, with the current medical reports that support the request attached.
Who pays
Payment for the treatment depends on authorization: a C-9 submitted after treatment without a listed just-cause reason can reduce reimbursement to 75 percent of the applicable fee schedule, unless it was filed within seven calendar days of starting treatment or before the next encounter, whichever is earlier.

Good to know

  • Presumptive approval in the first 60 days covers set soft tissue and musculoskeletal treatment, such as up to 12 physical medicine visits, imaging and EMG/NCV, but the FROI and a C-9 must be filed first.
  • If the MCO needs more information it sends a C-9-A. Return it with supporting records within 10 business days, and the MCO then has five business days to decide.
  • Psychiatric conditions cannot be added through a C-9. BWC considers them only on a Motion (C-86) filed by the injured worker or an authorized representative.
  • Approved C-9s carry timeframes: routine diagnostics are generally approved for up to two weeks and other services with no stated timeframe for up to 30 days. Tell the MCO if services run late.

Get the official form

Download the current version from the source each time; forms change without notice.

Request for Medical Service Reimbursement or Recommendation for Additional Conditions for Industrial Injury or Occupational Disease

How this list is checked

A form is listed only after its name and number were confirmed on the issuing agency’s or insurer’s own website, or in the form itself. Each entry links to that source. The list was last checked in October 2026. Forms and their requirements change without notice, so check the official page for the current version before you complete one.

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Frequently asked questions

How long does the MCO have to respond to a C-9?

The MCO must decide within three business days of receipt, or within five business days after receiving information it asked for on a C-9-A. If it does not send a decision back in that time, BWC deems the authorization granted, except for retroactive requests. A self-insuring employer has 10 days to respond or the authorization is deemed granted.

Can a C-9 add a new diagnosis to an Ohio claim?

Yes. Section III is for recommending additional conditions. Give a narrative diagnosis with location and site, check yes or no on causality, and attach an explanation plus supporting medical evidence such as exam and test findings. For state-fund claims BWC investigates and notifies all parties, while a self-insuring employer addresses the recommendation separately.

Do I need a C-9 during the 60-day presumptive authorization period?

Yes. The form's instructions say to use it for service requests even when services fall under the 60-day presumptive authorization. BWC's prior authorization policy requires both the FROI and the C-9 to be filed with the MCO before presumptive treatment starts, and the MCO acknowledges receipt within three business days.

Can I use my own document instead of the C-9?

BWC prefers the C-9, but its prior authorization policy accepts any physician-generated document that contains, at a minimum, the data elements on the C-9. Whatever format is used, the provider signature, individual BWC provider number and report date are required, and missing CPT codes can delay processing.