Summary & Overview
HCPCS G8810: Rh‑immunoglobulin Not Ordered, Clinician-Documented Reasons
HCPCS Level II code G8810 documents clinician-documented reasons for not ordering Rh‑immunoglobulin (Rhogam), for example when a patient has documented receipt within the prior 12 weeks or declines treatment. Nationally, the code standardizes capture of care decisions around Rh prophylaxis, supporting clinical documentation, quality measurement, and claims clarity when Rhogam is not given.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will learn the clinical context for using G8810, typical sites of service and service type, and how the code is used on claims to reflect documented clinical decisions. The publication outlines benchmarks and policy-relevant considerations for coding consistency and documentation practices, and it summarizes common modifiers and payer considerations where available.
Data not available in the input for some fields is noted in relevant sections. The piece is intended for a national audience of coders, clinicians, and revenue staff seeking a concise reference for HCPCS Level II code G8810 and its role in documenting non-administration of Rh‑immunoglobulin.
Billing Code Overview
HCPCS Level II code G8810 indicates that Rh-immunoglobulin (Rhogam) was not ordered with clinician-documented reasons, such as a prior documented receipt of Rhogam within 12 weeks or patient refusal. This code documents clinical justification for not administering Rhogam when it would otherwise be considered.
Service type: Preventive/obstetric immunization decision documentation
Typical site of service: Outpatient obstetrics clinics, prenatal care visits, emergency departments, and ambulatory care settings where Rh-status management and prophylaxis decisions are made.
Clinical & Coding Specifications
Clinical Context
A 28-year-old Rh-negative pregnant patient presents to the outpatient obstetric clinic at 32 weeks' gestation for routine prenatal care after an uncomplicated pregnancy. During the visit, the clinician reviews maternal records and documents that the patient received Rh-immunoglobulin (RhIG) prophylaxis at 28 weeks at an outside facility within the past 12 weeks and provides the original administration record. The clinician assesses that no additional RhIG dose is clinically indicated at this visit. The clinician documents the reason for not ordering RhIG in the medical record (prior documented receipt within 12 weeks). The encounter includes verification of maternal and fetal Rh status, counseling about alloimmunization risk, and planned follow-up. Typical site of service: outpatient obstetrics clinic or hospital outpatient department. Service type: clinical decision and medical management resulting in omission of RhIG administration with documentation of justification (use of modifier or administrative G-code for reporting non-ordered RhIG as applicable).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when additional work or complexity beyond typical counseling/documentation occurred and payer allows modifier with visit/procedure codes associated with RhIG decision-making. |