Place of service (POS) codes are two-digit codes maintained by CMS that tell the payer where a service was performed. They’re reported on professional claims (the CMS-1500 or its electronic equivalent, the 837P), and payers use them to apply the right payment rules.

POS 32 stands for Nursing Facility. CMS describes it as a facility that primarily provides residents with skilled nursing care and related services for the rehabilitation of injured, disabled, or sick persons, or, on a regular basis, health-related care services above the level of custodial care. In plain terms, POS 32 is used when a physician or other qualified practitioner sees a resident of a nursing facility who is not currently in a Medicare Part A covered skilled nursing stay.

The most common mistake with POS 32 is mixing it up with its neighbors. These codes describe settings that can look similar from the outside, sometimes even the same building, but they are billed differently:

• POS 31 – Skilled Nursing Facility: used when the patient is in a Medicare Part A covered SNF stay, typically following a qualifying hospital stay.
• POS 32 – Nursing Facility: used for residents who are not in a Part A covered stay, such as long-term residents or patients whose Part A days have been exhausted.
• POS 33 – Custodial Care Facility: used for facilities that provide room, board, and personal assistance but not skilled nursing care, such as some assisted living settings.

The key point is that the correct code depends on the patient’s coverage status at the time of service, not only on the building. A resident can move from POS 31 to POS 32 in the same facility when their covered skilled stay ends. Your billing team needs a reliable way to know which status applies on each date of service.

Under the Medicare Physician Fee Schedule, many services carry two rates: a facility rate and a non-facility rate. The setting reported in the POS field determines which one applies. CMS treats POS 31 as a facility setting and POS 32 as a non-facility setting, so the same CPT code can pay a different amount depending on which of the two you report. Reporting the wrong code can mean underpayment, overpayment that has to be refunded later, or a denial.

POS 32 is usually paired with the nursing facility evaluation and management codes, CPT 99304–99310 for initial and subsequent visits and 99315–99316 for discharge management. Documentation should clearly support the level of service billed, and payer-specific rules, especially for Medicare Advantage and Medicaid plans, should always be checked.

Most POS 32 problems come down to a handful of repeat issues:

• Not tracking Part A status: billing POS 31 after the covered stay has ended, or POS 32 while the patient is still in a covered stay.
• Defaulting to the provider’s office location: practice management systems sometimes carry over the office POS (11) when visits happen off-site.
• Mismatched E/M codes: using office visit codes instead of nursing facility E/M codes for a POS 32 encounter.
• Weak documentation: notes that don’t record where the patient was seen or support the level of care billed.

Each of these is preventable with the right front-end checks and clear communication between facility staff and the billing team. When denials do happen, a structured denial management process helps you catch the pattern and fix the root cause instead of reworking the same claims every month.

A few habits go a long way toward accurate place-of-service reporting:

• Set up a reliable feed or check-in routine with each facility so your team knows each resident’s coverage status on the date of service.
• Build claim scrubber rules that flag mismatches, such as nursing facility E/M codes billed with an office POS.
• Train providers to document the setting clearly in every note.
• Audit a sample of nursing facility claims each quarter to catch drift before it turns into a pattern.

If your team is stretched thin, partnering with an experienced medical billing service can bring in the payer knowledge and claim review processes needed to keep long-term care billing clean.