How and when were the CPT and HCPCS coding systems developed?

Asked by: Rosemarie Lubowitz  |  Last update: January 15, 2026
Score: 4.9/5 (17 votes)

With the release of the fourth edition of CPT in 1977, the AMA introduced a system for periodic updating of the codes to keep up with the ever-changing medical environment. In 1983, CPT was adopted as part of the Centers for Medicare & Medicaid Services (CMS), Healthcare Common Procedure Coding System (HCPCS).

When were HCPCS codes developed?

The Healthcare Common Procedure Coding System (HCPCS) was established in 1978 to standardize identification of medical services, supplies and equipment.

How was CPT developed?

In 1965, the AMA recognized the need for common language and helped create the Current Procedural Terminology (CPT) system to describe medical services and procedures. The first edition of CPT was published in 1966 and, for the most part, was focused on surgery.

What is the difference between HCPCS and CPT coding systems?

CPT codes are entirely numeric and consist of five digits. HCPCS codes are alphanumeric, which means they use both numbers and letters. You'll always see a letter followed by four numbers. These structures make it easy to differentiate between an HCPCS code vs.

When were CPT codes invented?

Development of the CPT code

The AMA first developed and published CPT in 1966.

What's the Difference Between CPT and HCPCS Coding

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How are new CPT codes developed?

How is a new code developed?
  • Step 1: AMA staff determines if the request is new. ...
  • Step 2: Refer application to the CPT Advisory Committee for evaluation and commentary. ...
  • Step 3: Refer application to the CPT Editorial Panel. ...
  • Step 4: CPT Editorial Panel takes an action and preliminary approvals.

When was the CPT built?

The railway construction began in 1881 and took four years to complete in 1885. When was the Canadian Pacific Railway completed? On November 7, 1885, the "Last Spike" was driven at Craigellachie in Eagle Pass, British Columbia, to meet the line all the way to the Pacific coast.

What is the main purpose of HCPCS codes?

HCPCS Level II: A standardized coding system that is used primarily to identify products, supplies, and services not included in the CPT® codes, such as ambulance services or durable medical equipment, prosthetics, orthotics, and supplies (DMEPOS) when used outside a physician's office.

What are the two main coding systems?

Two common medical coding classification systems are in use — the International Classification of Diseases (ICD) and the Current Procedural Terminology (CPT).

Who issues CPT codes?

The CPT® Editorial Panel is responsible for maintaining the CPT code set. The Panel is authorized by the AMA Board of Trustees to revise, update, or modify CPT codes, descriptors, rules and guidelines.

Who invented the CPT?

The first version of a CPT was developed and reported in the Journal of Consulting Psychology in 1956 by psychologists Haldor Rosvold, Allan Mirsky, Irwin Sarason, Edwin Bransom, and Lloyd Beck.

What is the purpose of the CPT coding system?

For more than 50 years, CPT has been the primary medical language used to communicate across health care, enabling seamless processing and advanced analytics for medical procedures and services.

What is the theory behind CPT?

CPT is proposed to promote recovery from PTSD by directly modifying maladaptive cognitions that have developed following the traumatic incident. These maladaptive cognitions can include erroneous interpretations of the event (e.g., self-blame) or distorted views of the self or world (e.g., “nobody can be trusted”).

Can a biller bill without a CPT code?

When billing a service or procedure, select the CPT or HCPCS code that accurately identifies the service or procedure performed. If no such code exists, report the service or procedure using the appropriate unlisted procedure or Not Otherwise Classified (NOC) code (which often end in 99).

Who assigns HCPCS codes?

The Pricing, Data Analysis and Coding (PDAC) contractor with input from the DME MACs are responsible for assigning individual DMEPOS products to HCPCS code categories for billing Medicare. Manufacturers and other entities do not have similar authority to assign their own code determinations to specific products.

What is the key purpose of ICD coding?

The ICD is important because it provides a common language for recording, reporting and monitoring diseases. This allows the world to compare and share data in a consistent and standard way – between hospitals, regions and countries and over periods of time.

What is the difference between HCPCS and CPt?

Key Differences between HCPCS and CPT

CPT codes are used to report medical, surgical, and diagnostic services performed by healthcare professionals. HCPCS codes are used to report medical procedures and services to Medicare, Medicaid, and other health insurance programs.

What are the 3 main types of coding?

Answer: There are three common types of coding:
  • Closed-form coding. This type of coding is used for fixed length messages, where the same code is used for every message. ...
  • Error-correcting codes. These codes are designed to detect and correct errors in transmitted messages. ...
  • Probabilistic coding.

What are the 3 main coding classification systems?

MEDICAL CODING TYPES
  • International Classification of Diseases (ICD)
  • Current Procedure Terminology (CPT)
  • Healthcare Common Procedure Coding System (HCPCS)

What is the history of HCPCS?

Prior to 2001, CMS was known as the Health Care Financing Administration (HCFA). HCPCS was established in 1978 to provide a standardized coding system for describing the specific items and services provided in the delivery of health care.

What is a CPT code?

Current Procedural Terminology (CPT®) codes provide a uniform nomenclature for coding medical procedures and services. Medical CPT codes are critical to streamlining reporting and increasing accuracy and efficiency, as well as for administrative purposes such as claims processing and developing guid.

What is the difference between ICD and HCPCS codes?

ICD-10-CM diagnosis codes provide the reason for seeking health care; ICD-10-PCS procedure codes tell what inpatient treatment and services the patient got; CPT (HCPCS Level I) codes describe outpatient services and procedures; and providers generally use HCPCS (Level II) codes for equipment, drugs, and supplies for ...

When were CPT codes developed?

In 1966, the American Medical Association (AMA) created CPT® codes to standardize reporting of medical, surgical, and diagnostic services and procedures performed in inpatient and outpatient settings.

What is the longest CPT code?

CPT codes, which are used on claims and statements to identify the types of services rendered, now offer only three timed codes for individual psychotherapy, the longest one being 90837 for 60 minutes.

Were Hcpcs codes were developed for coding services?

The history of HCPCS coding began in 1978 when the federal government created this coding system to standardize the reporting of medical services to the federal government for reimbursement.