G4018 — Obstetrics/gynecology mips specialty set
G4018 is a HCPCS Level II code for obstetrics/gynecology mips specialty set. It belongs to the Procedures and Professional Services (Temporary) section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusM
Measurement code. Used for reporting purposes only; never paid.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
The CMS record for G4018
- Long descriptor
- Obstetrics/gynecology mips specialty set
- Short descriptor
- Ob/gyn ss
- Added
- January 1, 2022
- BETOS
- Z2
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to G4018
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If G4018 is not quite right, the correct code is very often within a few positions of it.
- G4010Infectious disease mips specialty set
- G4011Internal medicine mips specialty set
- G4012Interventional radiology mips specialty set
- G4013Mental/behavioral and psychiatry mips specialty set
- G4014Nephrology mips specialty set
- G4015Neurology mips specialty set
- G4016Neurosurgical mips specialty set
- G4017Nutrition/dietician mips specialty set
- G4019Oncology/hematology mips specialty set
- G4020Ophthalmology/optometry mips specialty set
- G4021Orthopedic surgery mips specialty set
- G4022Otolaryngology mips specialty set
- G4023Pathology mips specialty set
- G4024Pediatrics mips specialty set
- G4025Physical medicine mips specialty set
- G4026Physical therapy/occupational therapy mips specialty set
Questions about G4018
What is HCPCS code G4018?
G4018 is a HCPCS Level II code for obstetrics/gynecology mips specialty set. It sits in the Procedures and Professional Services (Temporary) section.
Does Medicare cover G4018?
The CMS HCPCS file marks G4018 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is G4018 paid under the physician fee schedule?
G4018 carries PFS status code M. Measurement code. Used for reporting purposes only; never paid.