Place of service code

The place of service code tells the payer where the patient was. CMS maintains the code set for use on professional claims to specify the entity where services were rendered, and it advises checking each payer’s reimbursement policy for how it treats a given code. Three codes do most of the work for outpatient practices. POS 11 is the office: a location other than a hospital or similar facility where the professional routinely examines and treats patients on an ambulatory basis. POS 02 is telehealth with the patient somewhere other than home. POS 10 is telehealth with the patient at home. For Medicare professional claims, CMS’s telehealth booklet says to use 02 and 10 as of January 1, 2024.

The code matters because it changes the payment and the edits. Many payers pay facility and non-facility rates differently depending on POS, telehealth coverage rules key off 02 and 10, and some codes are simply not payable in some settings. The POS also has to agree with the provider’s enrolled locations and with the modifiers on the line.

The mistake is a default. Practice management systems fill POS 11 unless someone changes it, so a telehealth visit, a nursing facility visit or a home visit goes out as an office visit. The claim often pays, which makes it an overpayment waiting for a recoupment rather than a denial waiting for a fix. Set POS from the schedule or encounter type, not from a system default, and audit telehealth claims against the notes.