What Is an Insurance Group Number, and Where Do You Find It?

An insurance group number identifies the coverage group behind your health plan, typically an employer group. Your member ID identifies your member or subscriber record. Look for Group, Group #, Group ID, or GRP, usually on the front of your card or its digital version. Some Marketplace plans have no group number; if yours is missing, confirm with member services instead of substituting another code. CDPHP’s health insurance card guide MetLife’s insurance card guide

How your group number is used

Healthcare providers may use your group number together with your member ID to identify the applicable benefits and file claims. People enrolled under the same employer group can share a group number while having different member IDs. The group number alone does not confirm that a particular person’s coverage is currently active. CDPHP’s explanation of group and member identifiers

Group number vs. member ID, RxGRP, and RxBIN

Match each insurance card code to its purpose
Common card label	What it identifies	How it is used
Group, Group #, Group ID, or GRP	The coverage group, typically an employer group.	Helps connect your member record and claims to the group’s plan benefits.
Member ID, Subscriber ID, or ID	Your member or subscriber record; family identification arrangements vary.	Used to look up enrollment, verify coverage, and handle claims.
RxGRP	The prescription-benefit group.	Used in prescription claim processing; a separate field from the medical Group ID.
RxBIN	Prescription claim routing information.	Helps the pharmacy route a claim to the appropriate prescription benefit processor.

If a medical form asks for a group number, look for the medical Group or GRP field. RxGRP identifies the prescription-benefit group; do not assume it belongs in the medical field. CARIN insurance card field definitions

Some health cards use “policy number” as a label for the member or subscriber identifier. Family members may share a base ID with different dependent suffixes, or the plan may identify them another way. Match the form’s requested field: if it asks for the subscriber ID, use the subscriber identifier; if it separately asks for a dependent number or suffix, enter that information in its designated field. If the card does not make the distinction clear, ask member services which identifier to provide. A dependent suffix is not the group number. MetLife’s member and policy number terminology SimplyInsured’s explanation of dependent identifiers

Example: two coworkers, one coverage group

Imagine two coworkers enrolled under the same employer group. Their fictional cards both show Group: G24680. One has Member ID: M13579; the other has Member ID: M97531. The first card also shows RxGRP: RX246.

G24680 connects both coworkers to the coverage group. Their different member IDs identify their respective records. RX246 belongs to the prescription field, even though its label also contains “GRP.”

For a medical intake form, the first coworker would enter G24680 in the group-number field and M13579 in the member-ID field. The labels determine which value belongs where.

Where to find your insurance group number

Start with the front of your current health insurance card. Look for Group, Group #, Group ID, or GRP. Use the label rather than assuming a particular corner or number format.
Check the back if you cannot find it. Card layouts vary, and the reverse often includes member services contact information.
Open your insurer’s app or member portal. Look for a digital ID card, especially if your physical card is lost or has not arrived.
Ask member services to identify the correct field if it remains unclear. For employer coverage, HR or your benefits administrator can also help confirm the group information.

The exact card layout and available digital account features depend on the insurer and plan. MetLife’s physical and digital card guidance SimplyInsured’s card and employer group information

What if your card has no group number?

A missing group number does not, on its own, mean your coverage is invalid. Some individual plans purchased through a health insurance Marketplace may not have one. CDPHP explains that some insurers use a plan name instead for these plans. That does not mean you should enter the plan name in a form’s group-number field without asking. CDPHP’s explanation of Marketplace card fields

If your physical and digital cards show no medical group field, call member services and ask: “My card has a member ID but no Group or GRP field. Does my plan have a medical group number, and what should my provider use to verify my coverage?” For employer coverage, your benefits administrator can help resolve missing group information.

If a medical form requires a group number, tell the provider what the insurer confirmed and ask how to complete that field. There is no single entry that works for every form. Avoid guessing, copying your member ID into both fields, or using RxGRP simply because it is the only group label you see.

Example: an online form requires a number your plan does not use

A hypothetical Marketplace member’s physical and digital cards show Member ID and RxGRP, but no medical group number. An appointment registration form requires one.

The member contacts the insurer, which confirms that this plan has no medical group number. The remaining question is how the medical office handles that arrangement in its registration system.

The member tells the office: “My insurer confirmed that this plan has no medical group number, but your online form requires one. How should I complete registration?”

For the numbers on your current card and questions about active coverage, start with your insurer’s member services team. If you want help understanding or comparing health coverage options, you can contact KeyFirst Insurance.