AMS Reference Lab Navigation

Billing Services

TEL: 316-268-5690 or 800-876-0243
FAX: 316-858-1042 and 316-858-1043
Hours of Operation:
Monday - Friday, 8:30 a.m. – 4:30 p.m.

Our billing customer service center is dedicated to answering all types of client, patient, and third-party inquiries. The phone numbers listed above will provide you or your patients access to trained customer service representatives. These numbers also appear on all patient statements.

Client Billing
Patient Billing
Third-Party Billing
Medical Necessity – Medicare
CPT Codes
On-Line Ordering


Client Billing

Clients will be billed monthly by an itemized invoice that includes the date of service, patient’s name, medical record number, test performed, CPT code, doctor’s name, and the fee for each test completed during the month. The statements are run on the 2nd of each month, so you should receive them between the 5th and 8th of the month. In special cases we can arrange to send statements weekly. Please note that all bills are due and payable upon receipt.

If you have any questions pertaining to your account, please notify us immediately in writing so that we may resolve them in a timely manner. Billing instruction changes must be supplied within 60 days from the date of the invoice. AMS will not process any billing instruction change requests after the 60-day grace period. The charges will remain the client’s responsibility.

How to Fill Out a Request for Client Billing

Indicate with a mark the “Bill Doctor/Clinic/Hospital” option on the requisition. Also include:

  • Patient’s name or other identifying nomenclature
  • Patient’s sex
  • Patient’s date of birth
  • Specimen date and time
  • Patient’s telephone number (optional)
  • Physician’s full name

Please note: Without the correct information to properly bill patients, Medicare, Medicaid or insurance payers, we must automatically bill the client’s account.

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Patient Billing

Clients may also choose to have AMS bill their patients directly for laboratory services. When direct patient billing is requested, the patient’s complete name and address must be included in the space provided on the requisition.

How to Fill Out a Requisition for Patient Billing

Indicate with a mark the “Bill Patient/Insurance” option on the requisition. Also include:

  • Patient’s name
  • Patient’s sex
  • Patient’s date of birth
  • Specimen date and time
  • Patient’s telephone number
  • Responsible party’s name if different from patient
  • Responsible party’s complete mailing address
  • Physician’s full name
  • All applicable ICD-9 diagnosis codes to their highest level of specificity (Optional)

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Third-Party Billing

AMS Laboratory is a participating supplier with the Medicare program and is an enrolled provider with Kansas Medicaid. AMS takes assignment on all claims for covered services submitted to the Medicare and Medicaid programs.

In addition to Medicare and Medicaid, AMS is enrolled with a large number of private insurance companies and managed care organizations. As a service to your patients, and in compliance with agreements established with insurance and managed care companies, AMS will bill your patient’s primary insurance or managed care organization directly for contract plans when provided with complete and accurate billing information.

How to Fill Out a Requisition for Third-Party Billing

Indicate with a mark the “Bill Patient/Insurance” option on the requisition. Also include:

  • Patient’s name
  • Patient’s sex
  • Patient’s date of birth
  • Specimen date and time
  • Patient’s telephone number
  • Responsible party’s name if different from patient
  • Responsible party’s complete mailing address
  • Physician’s full name
  • Employer’s name (Optional)
  • All applicable ICD-9 diagnosis codes to their highest level of specificity
  • Patient’s relationship to policy holder
  • Indicate which insurance is primary

Please attach a copy of the subscriber’s insurance card to the requisition. If a copy of the card is not available, complete the following information on the requisition:

  • Policy holder’s identification number as it appears on the insurance card
  • Group number as it appears on the insurance card
  • Complete name and address of the insurance company

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Medical Necessity – Medicare

The Centers for Medicare and Medicaid Services (CMS) is responsible for ensuring that services being paid for by the Medicare program are medically necessary. CMS has created national edits called National Coverage Determinations (NCDs), which require documentation of medical necessity before a claim may be paid. In addition, local carriers maintain a list of Local Medical Review Policies (LMRPs) that also require documentation of medical necessity.

Local Medicare carriers have the authority to deny claims when the diagnosis code(s) provided for a test does not substantiate medical necessity. If a physician does not submit a covered ICD-9 code for an NCD or LMRP, AMS will contact the physician’s office to request a diagnosis indicating medical necessity. If a covered diagnosis code is not available, AMS will expect a completed Advanced Beneficiary Notice to be attached to the requisition in order to bill the patient. Directions for completing the ABN are on the requisition. If an ABN has not been completed, AMS will bill the client.

Tests that are subject to NCDs and LMRPs are printed in red on the requsitions. The Medicare carrier may approve additional LMRPs for other laboratory tests at any time. A complete listing of all NCDs and LMRPs along with covered diagnosis codes can be found at www.cms.hhs.gov/coverage.

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CPT Codes

CPT codes listed in this Service Guide are provided only as guidance to assist you in billing. CPT codes listed reflect our interpretation of CPT coding requirements and are subject to change at any time. It is the client’s responsibility to verify the accuracy of the codes. If you have questions, please refer to the Current Procedural Terminology (CPT) manual published by the American Medical Association.

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On-Line Ordering

All of the billing options available to clients who use paper requisitions are also available to clients who use Lab Portal to order lab tests via the web. The choices are called “Insurance”, “Workers’ Compensation”, “Patient”, and “Client.” Click on the appropriate radio button and the screens that appear will allow you to fill in the necessary information to create a successful billing request.