Place of Service (POS) Code
Place of Service Code
Two-digit code on a CMS-1500 claim identifying where a service was provided.
1 min read · Last reviewed May 23, 2026
At a glance
- Category
- Billing
- Acronym for
- Place of Service Code
- Primary sources
- 2
- Workspace handoff
- revenue audit →
Where this comes up
This shows up in revenue-cycle work — claim scrubbing, charge entry, posting, A/R follow-up, and month-end close. Billers and practice managers hit this term when reconciling a payment, working a denial queue, or auditing why a claim aged past 60 days.
Full definition
What it is in practice
The CMS POS Code Set defines POS values such as 11 (office), 22 (on-campus hospital outpatient), 02 (telehealth other than home), and 10 (telehealth in patient's home). Some POS values impact reimbursement (e.g., facility vs non-facility PE).
How it shows up in your practice
POS errors are a leading silent revenue leak — POS 22 vs 11 changes the practice-expense reimbursement on many CPT codes. Confirm the correct POS at the system level for each location.
Sources
- CMS — Place of Service Code Sethttps://www.cms.gov/medicare/coding-billing/place-of-service-codes/code-sets
- CMS — Place of Service Codes Listhttps://www.cms.gov/medicare/coding-billing/place-of-service-codes/code-sets
Audit POS usage in Revenue Audit
Open revenue audit →Related terms
- BillingFacility FeeA charge billed by a hospital or facility for the institutional resources used in providing a service, separate from the professional fee.
- TelehealthTelehealth POS Codes (02 and 10)Place of Service 02 (telehealth other than home) and POS 10 (telehealth in patient's home) identify telehealth encounters on professional claims.
- BillingProfessional ComponentThe portion of a procedure code (designated by modifier 26) representing the physician's interpretation or supervision, separate from the technical component.
D3rx is a healthcare-billing and compliance research aid maintained by D3rx Inc. Articles are drafted by an LLM (Anthropic Claude) against primary HHS, OCR, CMS, eCFR, NIST, and state-regulator publications, and reviewed for restraint and source fidelity by the D3rx team.
Reviewer status: a named credentialed reviewer (CHC, CHPC, or healthcare attorney) is being engaged. Until that engagement is finalized, this page does not claim credentialed review.
Related across the archive
- GlossaryTelehealth POS Codes (02 and 10)Place of Service 02 (telehealth other than home) and POS 10 (telehealth in patient's home) identify telehealth encounters on professional claims.
- GlossaryFacility FeeA charge billed by a hospital or facility for the institutional resources used in providing a service, separate from the professional fee.
- GlossaryProfessional ComponentThe portion of a procedure code (designated by modifier 26) representing the physician's interpretation or supervision, separate from the technical component.
- GlossaryPlace of Service 11 (Office)Place of service code for services furnished in a physician's office or other freestanding outpatient setting.
- GlossaryPlace of Service 21 (Inpatient Hospital)Place of service code for services furnished to a patient who has been admitted as an inpatient at a hospital.
- BillingAWV + Problem Visit Same Day: How to Bill CorrectlyYes, you can bill AWV and a problem visit the same day. Here's how to do it correctly with modifier -25.
- BillingPlace of Service Codes: Which One to Use and Why It Changes Your ReimbursementPOS 11 vs 21 vs 02 vs 10. How the two-digit code on your claim determines whether you get office or facility rates.
- RegulationMLN: Place of Service (POS) Codes for Professional ClaimsReference to the CMS Place of Service code set used on professional claims to identify where a service was furnished, affecting payment under the facility/non-facility differential.
This glossary entry is a research aid for billing and compliance staff. It does not provide legal, medical, or financial advice and does not replace counsel. References cited link to primary sources at HHS, OCR, CMS, eCFR, NIST, and the relevant payer or industry body.