How to bill out of network: 3 options for clinicians
Walking is one of the most fundamental activities of daily living (ADLs). It is also one of the most complex dynamic movements performed. Gait requires proprioception and kinetic awareness, strength, agility, motor control, mobility, cardiovascular fitness, and more.
So much of walking is performed subconsciously, until a problem arises and the system breaks down. Because it requires so many things coordinating at one time, a domino effect can occur if one part of the dynamic movement pattern is impaired.
Physical therapists regularly address these deficits through targeted clinical interventions. However, selecting the correct CPT code for gait training depends on the primary clinical intent of the session, the specific interventions performed, and the therapist's documentation.
What is the CPT code for gait training?
The primary gait training CPT code used in physical therapy is CPT 97116. This CPT code for gait training is defined as a therapeutic procedure in one or more areas, each 15 minutes; gait training (includes stair climbing).
Determining when to bill CPT 97116 versus other gait training CPT codes that include walking relies on the clinical judgment of the physical therapist.
The skilled component of gait training is not simply having the patient walk, do stairs, or run. It is up to the physical therapist to determine the level of assistance needed, correct biomechanical dysfunction and compensatory patterns, provide the appropriate verbal/tactile cueing, and safely progress the patient’s training.
Gait training can be used to support a large array of patients, including:
Patients with neurological conditions (e.g., stroke, Parkinson's disease, or spinal cord injury)
Post-operative orthopedic cases (e.g., total hip or knee arthroplasty)
Patients learning to use new assistive devices or prosthetics
Individuals with an increased fall risk or severe deconditioning
Athletes recovering from lower-extremity injuries impacting running mechanics
While CPT 97116 is the direct treatment code for gait training, therapists frequently utilize functional activities to improve ambulation that cross into other coding categories. Selecting the proper gait training CPT code depends on the primary outcome of the intervention.
CPT code | Code description | Primary clinical focus |
|---|---|---|
CPT 97116 | Gait training | Retraining gait mechanics, cadence, safety, and assistive device negotiation during ambulation. |
CPT 97110 | Therapeutic exercise | Building foundational strength, endurance, or range of motion (ROM) through active movement. |
CPT 97112 | Neuromuscular reeducation | Retraining posture, balance, proprioception, and movement patterns to restore kinesthetic awareness. |
CPT 97530 | Therapeutic activities | Dynamic, multi-step functional tasks (e.g., lifting, carrying, bending, or sit-to-stand transitions). |
CPT 97761 | Prosthetic training | Assessment, fitting, donning/doffing, and initial functional use of a prosthetic limb. |
What interventions are included under CPT 97116?
Gait training encompasses a broad range of skilled interventions tailored to patient deficits. Interventions can take place on dry land, on a treadmill, or in an aquatic environment. Skilled interventions involving functional activities to improve ambulation include:
Gait pattern retraining: Addressing step length, symmetry, landing mechanics, movement tolerance, and phasing throughout the gait cycle.
Maneuverability drills: Retraining starting, stopping, side-stepping, and changing directions safely.
Assistive device instruction: Training proper usage of walkers, crutches, or canes across step-to, step-through, and multi-point gait patterns.
Speed and cadence training: Retraining cadence, variable speed transitions, interval walking, and progression to jogging.
Variable surface navigation: Practicing ambulation over carpet, outdoor terrain, ramps, thresholds, gravel, and grass.
Obstacle navigation: Negotiating furniture, doorways, floor objects, cones, and ladder drills.
Stair and step negotiation: Retraining ascending and descending mechanics, handrail reliance, weight-bearing restriction compliance, and safety strategies.
Body-weight-supported ambulation: Utilizing parallel bars, treadmill harnesses, ceiling-mounted track systems, standing frames, and hydrotherapy pools.
Documentation should reflect specific gait and balance measurements, level of assistance required, orthotic/prosthetic use, specific cueing used, any specific gait dysfunction, and the patient’s response to care. Sometimes, other gait training CPT codes could be used in place of or in addition to 97116.
CPT 97110: Therapeutic exercise
CPT 97110 focuses on restoring basic physical parameters such as strength, endurance, or flexibility. This gait training CPT code is used when the primary intent of the exercise is to improve endurance, range of motion, mobility, or strength.
If a patient walks on a treadmill solely to build cardiovascular endurance or lower-extremity strength without active cueing, the session falls under the gait training CPT code CPT 97110. If the therapist provides real-time biomechanical analysis, manual corrections, or cadence adjustments while the patient walks on the treadmill, the therapist should bill CPT 97116.
However, it’s ultimately up to the physical therapist to determine which CPT code for gait training is appropriate.
CPT 97761: Prosthetic training
CPT 97761 covers initial prosthetic fitting, skin inspection, and education on donning and doffing the device. This code focuses specifically on prosthetic assessment and utilization. Once the intervention progresses to active gait retraining with the prosthesis, the service shifts to CPT 97116.
CPT 97530: Therapeutic activities
Physical therapists looking for gait training CPT codes often struggle to choose between CPT 97116 and the therapeutic activity CPT code 97530. Billed as a 15-minute timed service, CPT 97530 applies when intervention is focused on dynamic, multi-step, functional activities to improve ambulation.
Examples of these tasks are reaching, squatting, transfers, lifting, transitions, etc. If the functional activity involves gait, the physical therapist must determine the therapeutic activity CPT code to use—whether the primary focus is gait mechanics (CPT 97116) or a dynamic functional task (CPT 97530)
CPT 97530 applies to functions that integrate ambulation into a broader daily activity, like having a patient walk while carrying a laundry basket or navigate around obstacles to retrieve items.
CPT 97112: Neuromuscular reeducation
CPT 97112 may be used when the intervention focuses on proprioception, movement pattern retraining, balance activities, coordination, and postural control. The documentation should specify the purpose of the intervention.
How do physical therapists bill for gait training CPT code reimbursement?
When billing for gait therapy, CPT 97116 is a timed code billed in 15 minute units. It is not limited to one unit per session. The number of units is based on the total treatment minutes. When submitting claims to Medicare and Medicare Advantage plans, physical therapists must apply the 8-minute rule to determine the allowable units:
0-7 minutes: 0 units
8-22 minutes: 1 unit
23-37 minutes: 2 units
38-52 minutes: 3 units
Clinicians frequently ask: What is the CPT code for gait training for the first 30 minutes? Under Medicare rules, providing 30 minutes of dedicated gait training falls into the 23-to-37-minute bracket, allowing the therapist to bill two units of CPT 97116.
If a therapist combines multiple timed therapeutic activity CPT codes in a single session—such as 15 minutes of gait training (CPT 97116) and 15 minutes of therapeutic exercise (CPT 97110)—the total combined time (30 minutes) yields two billable units. The therapist would bill one unit of CPT 97116 and one unit of CPT 97110.
In physical therapy, gait training is one of the most common, functional interventions performed. It requires skilled assessment, movement analysis, clinical decision making and real time correction during treatment.
Gait training is based on the physical therapist’s identification of the patient’s specific deficits and to build a treatment plan to address these issues in order to meet physical therapy goals.
Understanding the proper treatment, coding, and subsequent documentation of these interventions is the key to accurate billing.
Sources
American Physical Therapy Association. (n.d.). Coding and billing.
Physical Therapy Now. (2026). 8-minute rule in physical therapy billing: What providers need to know.
World Health Organization. (n.d.). International classification of functioning, disability and health (ICF).
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