Type of Services

Types of Services

All available CMS Type of Service codes used to identify the specific category of healthcare services provided by a healthcare provider

What are CMS Type of Service codes?

CMS Type of Service (TOS) codes are a set of codes used to identify the specific category of healthcare services provided by a healthcare provider. The Centers for Medicare and Medicaid Services (CMS) developed these codes to help standardize the billing process and ensure accurate payment for services rendered. TOS codes are used in various healthcare settings, including hospitals, outpatient clinics, and ambulatory surgical centers.

Each TOS code represents a specific type of healthcare service, such as diagnostic testing, surgical procedures, or durable medical equipment. These codes are used by healthcare providers and billing departments to report services provided to insurance companies, Medicare, and Medicaid. Accurate use of TOS codes is essential for proper reimbursement and compliance with regulations.

Complete list of CMS Type of Service Codes

Active Codes

  • 0:Whole blood
  • 1:Medical care
  • 2:Surgery
  • 3:Consultation
  • 4:Diagnostic radiology
  • 5:Diagnostic laboratory
  • 6:Therapeutic radiology
  • 7:Anesthesia
  • 8:Assistant at surgery
  • 9:Other medical items or services
  • A:Used durable medical equipment (DME)
  • B:High risk screening mammography
  • C:Low risk screening mammography
  • D:Ambulance
  • E:Enteral/parenteral nutrients/supplies
  • F:Ambulatory surgical center (facility usage for surgical services)
  • G:Immunosuppressive drugs
  • H:Hospice services
  • I:Purchase of DME (installment basis)
  • J:Diabetic shoes
  • K:Hearing items and services
  • L:ESRD supplies
  • M:Monthly capitation payment for dialysis
  • N:Kidney donor
  • P:Lump sum purchase of DME, prosthetics, orthotics
  • Q:Vision items or services
  • R:Rental of DME
  • S:Surgical dressings or other medical supplies
  • T:Psychological therapy outpatient mental health limitation
  • U:Occupational therapy
  • V:Pneumococcal/flu vaccine
  • W:Physical therapy

Obsolete Codes

  • Y:Second opinion on elective surgery (obsoleted 1/97)
  • Z:Third opinion on elective surgery (obsoleted 1/97)