what is EPISODE, Evaluation, and interval in outpatient therapy billing

The EPISODE of Outpatient Therapy – For the purposes of therapy policy, an outpatient therapy episode is defined as the period of time, in calendar days, from the first day the patient is under the care of the clinician (e.g., for evaluation or treatment) for the current condition(s) being treated by one therapy discipline (PT, or OT, or SLP) until the last date of service for that discipline in that setting.

During the episode, the beneficiary may be treated for more than one condition; including conditions with an onset after the episode has begun. For example, a beneficiary receiving PT for a hip fracture who, after the initial treatment session, develops low back pain would also be treated under a PT plan of care for rehabilitation of low back pain. That plan may be modified from the initial plan, or it may be a separate plan specific to the low back pain, but treatment for both conditions concurrently would be considered the same episode of PT treatment. If that same patient developed a swallowing problem during intubation for the hip surgery, the first day of treatment by the SLP would be a new episode of SLP care.



EVALUATION is a separately payable comprehensive service provided by a clinician, as defined above, that requires professional skills to make clinical judgments about conditions for which services are indicated based on objective measurements and subjective evaluations of patient performance and functional abilities. Evaluation is warranted e.g., for a new diagnosis or when a condition is treated in a new setting. These evaluative judgments are essential to development of the plan of care, including goals and the selection of interventions.

RE-EVALUATION provides additional objective information not included in other documentation. Re-evaluation is separately payable and is periodically indicated during an episode of care when the professional assessment of a clinician indicates a significant improvement, or decline, or change in the patient's condition or functional status that was not anticipated in the plan of care. Although some state regulations and state practice acts require re-evaluation at specific times, for Medicare payment, reevaluations must also meet Medicare coverage guidelines. The decision to provide a reevaluation shall be made by a clinician.

INTERVAL of certified treatment (certification interval) consists of 90 calendar days or less, based on an individual’s needs. A physician/NPP may certify a plan of care for an interval length that is less than 90 days. There may be more than one certification interval in an episode of care. The certification interval is not the same as a Progress Report period.