Summary & Overview
HCPCS G0148: Screening Cervical/Vaginal Cytopathology, Automated with Manual Rescreening
HCPCS Level II code G0148 denotes screening cytopathology smears of the cervix or vagina conducted using an automated system with subsequent manual rescreening. This laboratory-based screening code captures a hybrid workflow that leverages automated cytology platforms for primary screening while retaining human review when automated flags or quality checks require further assessment. Nationally, the code is relevant for pathology labs, women's health clinics, and payers managing cervical cancer screening pathways and quality-control processes.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find concise benchmarks and coverage context, a summary of clinical and billing settings where the code is used, and notes on common modifiers and payer expectations where available. The publication also outlines the clinical context for automated plus manual cytology screening—how the service fits into routine cervical cancer prevention programs—and highlights implications for billing workflows, documentation, and laboratory operations.
This summary is intended for a national audience of health policy analysts, billing professionals, laboratory directors, and payers seeking a clear reference on the purpose and operational setting of G0148 and what to expect when this screening modality is billed.
Billing Code Overview
HCPCS Level II code G0148 describes a screening cytopathology smear of cervical or vaginal specimens performed by an automated system with manual rescreening. The service type is automated cytology screening with manual rescreening, a laboratory screening process that combines automated image analysis or screening instruments with a human technologist review of flagged or selected slides.
Typical site of service: clinical laboratory or pathology laboratory processing cervical or vaginal cytology specimens. The code represents a screening-level laboratory service used in routine cervical cancer screening workflows and related cytology programs.
Clinical & Coding Specifications
Clinical Context
A typical patient is a woman aged 21–65 presenting for routine cervical cancer screening or follow-up of an abnormal screening test. During a preventive or problem-focused clinic visit in an outpatient gynecology office, community health clinic, or hospital outpatient department, a clinician collects a cervical or vaginal sample using a Pap smear or liquid-based cytology collection device. The specimen is processed by an automated cytology screening system; abnormal or flagged slides are then manually rescreened and reviewed by a cytotechnologist or pathologist. The workflow includes specimen collection, laboratory accessioning, automated screening (machine-assisted primary screen), manual rescreening for quality control or abnormalities, and final pathologist sign-out with issuance of the cytology report.
Common encounter reasons include routine screening, post-treatment surveillance, evaluation of abnormal vaginal bleeding, or follow-up of prior abnormal cytology or positive human papillomavirus (HPV) testing. Typical sites of service include outpatient physician offices (gynecology), community health clinics, and hospital outpatient laboratories where the automated screening equipment and cytology personnel are available.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Primary procedure performed | Use when this service is the primary procedure performed by the reporting provider during the encounter. |