Medicare Claims Processing Manual (Pub. 100-04), Ch. 18 § 70.1.1
HCPCS and Diagnosis Coding
70.1.1 - HCPCS and Diagnosis Coding
(Rev. 3329, Issued: 08-14-15, Effective: 01-01-12, Implementation: 09-14-15)
The following HCPCS codes should be reported when billing for screening glaucoma services:
G0117 - Glaucoma screening for high-risk patients furnished by an optometrist (physician for A/B MAC (B))
or ophthalmologist.
G0118 - Glaucoma screening for high-risk patients furnished under the direct supervision of an optometrist
(physician for A/B MAC (B) or ophthalmologist.
The A/B MAC (B) claims type of service for the above G codes is: TOS Q.
Glaucoma screening claims should be billed using screening (“V”) code V80.1 (Special Screening for Neurological,
Eye, and Ear Diseases, Glaucoma), or if ICD-10-CM is applicable, diagnosis code Z13.5 (encounter for screening for
eye and ear disorders). Claims submitted without a screening diagnosis code may be returned to the provider as
unprocessable (refer to chapter 1 of this manual for more information about incomplete or invalid claims).