CPT 99418
Prolng ip/obs e/m each 15 min
Last reviewed August 2026 · DataLily AI data team
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CPT 99418 at a glance
- Code
- 99418
- Code type
- CPT/HCPCS
- Short descriptor
- Prolng ip/obs e/m ea 15 min
- Category
- Not typically performed in an ASC
- ASC eligibility
- Not typically performed in an ASC
- Typical setting
- Hospital outpatient department (POS 22) or office (POS 11). Not typically performed in an ASC.
What is CPT code 99418?
CPT 99418 is a CPT/HCPCS procedure code for prolng ip/obs e/m each 15 min. Its official short descriptor is "Prolng ip/obs e/m ea 15 min". In the ASC context it is grouped under Not typically performed in an ASC.
Is CPT 99418 eligible in an ambulatory surgery center (ASC)?
CPT 99418 is not typically performed in an ambulatory surgery center; it is usually done in a hospital outpatient department (HOPD) or office instead.
Where is CPT 99418 typically performed?
Hospital outpatient department (POS 22) or office (POS 11). Not typically performed in an ASC.
Reference information about ASC eligibility and typical procedure setting. Codes, descriptors, and ASC-eligibility status change over time. This is a coding reference, not billing, coding, or legal advice. Always verify against current guidance and individual payer policy before scheduling or billing. CPT is a registered trademark of the American Medical Association. Read the DataLily AI data methodology.