What Are the Most Common CPT Codes for Physical Therapy?

The documentation and coding of physical therapy (PT) are two of the most voluminous and detailed areas of work in today's healthcare system. This is why it is critical to understand how to assign the appropriate CPT codes for physical therapy services; it can be used for reimbursement, regulatory compliance, and another important function: ensuring the financial viability of a PT practice. Physical therapists and their billing personnel should have an understanding of the clinical side of coding, but they also need to have an understanding of the administrative side of coding. 

This guide intends to provide you with an overview of the basic CPT codes commonly used for physical therapy services for the 2025-2026 treatment periods, as well as descriptions of how to utilize those CPT codes properly and guidelines for billing correctly.

‍

CPT Code for Physical Therapy Evaluation and Re-Evaluation 

Every treatment episode of physical therapy has a corresponding initial evaluation. Physical therapists can use CPT codes classified according to level of complexity to describe this service, and the selected code must be substantiated by thorough documentation of the clinical presentation, the clinical decision-making, and the resulting functional limitations.

‍

‍

Therapeutic Exercise and Neuromuscular Re-Education CPT Codes

Therapeutic procedure codes are among the most commonly used CPT codes in physical therapy treatment sessions. These are unit codes, and each unit represents 15 minutes of one-on-one time with a skilled therapist. Medicare has a rule, known as the 8-minute rule, whereby a single unit can be submitted for reimbursement if at least 8 minutes of a service have been rendered.

‍

97110: Therapeutic Exercise

CPT code 97110 is an exercise that is designed to build strength and endurance in one or more areas. The exercises also build range of motion and flexibility. The exercises are billed in 15-minute increments, following the 8-minute rule. A physical therapist is not allowed to bill for the physical therapy cpt code unless the session lasts for 8 minutes. The therapist is allowed to bill for one unit unless they can offer the therapy for 22 minutes. 

‍

97112: Neuromuscular Re-Education

Neuromuscular re-education is an exercise that is designed to retrain the brain. The exercises are essentially designed to teach the muscles how to function. The exercises, therefore, promote effective communication between the brain and the muscles. The exercises are billed in 15-minute increments, following the 8-minute rule. 

‍

97116: Gait Training

Gait training is an exercise that is designed to train an individual to walk. The exercises involved in the therapy include activities designed to train an individual to stand and walk. The exercises seek to improve the strength of the muscles and joints of the individual’s legs. The exercises also seek to improve the strength of the individual’s balance, posture, and endurance.

‍

‍

Physical Therapy Modality CPT Codes

The modality codes include the application of physical agents to decrease pain, promote healing of tissues, and improve function. It is further classified into supervised modalities and constant attendance modalities.

‍

Supervised Modalities: Untimed, Billed Once Per Session

‍

‍

Constant Attendance Modalities: Timed, 15 Min/Unit

‍

‍

Orthotic and Prosthetic Management CPT Codes

‍

‍

RTM Codes

The main reason for developing Remote Therapeutic Monitoring (RTM) was to improve the care of musculoskeletal patients while at home. RTM helps improve engagement with your overall treatment plan and assists patients with receiving virtual care between visits.

‍

‍

Physical Therapy Modifiers

Modifiers are a vital part of the process of using the PT CPT codes. They give extra information concerning the service provided. For example, the 59 modifier shows that the service provided was distinct or separate from the other services provided during the same session.

‍

Modifier 59

A distinct or separate service has been rendered that is different from another service that is designated as a non-evaluation and management service when using the 59 modifier. Services should meet the requirements outlined in the National Correct Coding Initiative.

‍

GP Modifier

The GP modifier shows that the service was provided by the PT. It is used mainly in the inpatient and outpatient multidisciplinary settings.

‍

KX Modifier

The KX modifier shows that the services provided to the patient exceed the $2,010 threshold. It shows that the treatment provided to the patient is justified.

‍

XE Modifier

The XE modifier shows that the service provided was distinct since it took place at a different time.

‍

XP Modifier

This shows that the service provided was distinct since it was provided by a different practitioner.

‍

Physical Therapy CPT Code Billing

Physical therapy billing has a unique complexity that includes time and untimed codes, modifiers, the 8-minute rule, cap management, PTA differential, and ever-changing payer-specific requirements. Manual processes cannot accommodate the complexity, which results in denied claims, lost revenue, and non-compliance. RapidClaims has been designed specifically for the physical therapy billing needs, providing intelligent automation and real-time validation for the entire PT billing process.

‍

RapidClaims: Physical Therapy Billing Capabilities at a Glance

• Automated CPT code suggestion from PT treatment documentation using NLP
• Built-in 8-minute rule calculator with unit validation and boundary flagging
• Automatic GP, KX, CQ, GY, and modifier 95 application
• Real-time therapy cap tracking and KX threshold alerts per patient
• PTA differential (85%) tracking and CQ modifier compliance automation
• Real-time claim scrubbing against payer-specific LCDs and NCDs
• ICD-10 and CPT code pairing validation for medical necessity
• Denial root-cause analysis by CPT code, provider, payer, and modifier

‍

Physical therapy includes the following CPT codes: evaluation, therapeutic exercise, modalities, functional assessment, orthotic/prosthetic. These have different documentation requirements, time constraints, and different payment rules. To master the CPT codes for physical therapy, education is necessary, documentation is critical, and the billing system must have the capability to keep pace with the regulatory environment.

Regardless of the type and scope of your physical therapy practice, whether it is an outpatient private practice or a rehabilitation practice with multiple facilities, the key to optimal performance in the revenue cycle is the accuracy of the coding. By leveraging the extensive knowledge of PT CPT codes and the intelligent automation of RapidClaims, practices can improve clean claim rates, increase reimbursement speed, and improve their overall position of compliance while allowing the therapists to concentrate on what is most important: patient outcomes.

‍

FAQs

Can a PTA bill CPT codes?

Yes, a physical therapist assistant (PTA) can bill CPT codes for services they provide. However, the billing must follow the guidelines set by Medicare and commercial insurance payers. In many cases, services performed by a PTA are reimbursed at a reduced rate compared to services performed by a physical therapist, and proper supervision requirements must be met according to payer regulations.

‍

What is the 8-minute rule in physical therapy billing?

The 8-minute rule is defined by the Centers for Medicare & Medicaid Services. The rule requires the therapist to have at least 8 minutes of the timed service.

‍

Do physical therapy CPT codes require modifiers?

Yes, modifiers are necessary. Modifiers like GP (physical therapy plan of care) and KX are necessary.

‍

What is the CPT code for physical therapy evaluation and treatment?

The CPT codes for physical therapy evaluation are 97161 (low complexity), 97162 (moderate complexity), and 97163 (high complexity), with 97164 used for re-evaluation.

‍

What is the CPT code for physical therapy evaluation and treatment?

The CPT codes commonly used for physical therapy evaluation are 97161, 97162, and 97163, which represent low, moderate, and high complexity evaluations. Treatment procedures are billed separately using codes such as 97110 (therapeutic exercise), 97112 (neuromuscular reeducation), and 97140 (manual therapy). The specific CPT code used depends on the patient’s condition, treatment complexity, and services provided during the therapy session.