Trying to find the Member ID, Group Number, Payer ID, RxBIN, RxPCN, or RxGRP on your health insurance card? Each identifier has a different purpose. Some are used for medical claims, while others help pharmacies process prescription benefits.
This guide explains what each insurance card number means, where you can usually find it, and the important differences between commonly confused identifiers such as RxGRP vs Group Number and Subscriber ID vs Member ID.
Quick answer: The Member ID identifies the covered member or account, the Group Number generally identifies a group health plan, and RxBIN, RxPCN, and RxGRP are primarily used to process pharmacy benefits. A Payer ID is used for electronic healthcare transactions and may not appear on the insurance card.
Health Insurance Card Numbers at a Glance
| Insurance Card Field | What It Generally Means | Primary Use |
|---|---|---|
| Member ID | Member or coverage identifier | Eligibility and medical claims |
| Subscriber ID | Identifier associated with the subscriber/coverage | Eligibility and claims |
| Group Number | Employer, group policy, or benefit arrangement | Medical coverage |
| Payer ID | Electronic identifier used for payer transactions | Electronic claims/EDI |
| RxBIN | Pharmacy claims routing identifier | Prescription claims |
| RxPCN | Additional pharmacy processing/routing identifier | Prescription claims |
| RxGRP | Prescription benefit group | Pharmacy claims |
Insurance companies use different card formats and terminology, so not every card will contain every field shown above.
What Is a Health Insurance Card?
A health insurance card is a physical or digital identification card provided by a health plan. It contains information that healthcare providers, pharmacies, and billing teams can use to identify your coverage and process healthcare transactions.
Having an insurance card does not necessarily confirm that your coverage is currently active. Healthcare providers should verify current eligibility and benefits with the health plan before relying on the card information.
Most cards contain some combination of:
Member or subscriber name
Member ID or Subscriber ID
Group Number
Health plan or network
Copay information
Member services contact information
Pharmacy benefit information
Claims or provider information
The exact information and its location vary by insurer and plan.
How to Read a Health Insurance Card
When reviewing an insurance card, start with the member and plan information before moving to medical and pharmacy identifiers.
Step 1: Identify the Insurance Company and Plan
Find the insurance company or health plan name, which is usually displayed prominently on the card.
The card may also identify a specific network, product, or plan type. Providers should confirm the correct plan because one insurer can administer multiple networks and benefit arrangements.
Step 2: Check the Member or Subscriber Name
Look for the member, subscriber, or policyholder information.
Some cards list individual covered members, while others may primarily identify the subscriber. If the patient’s name is not displayed on the card, providers should verify the patient’s relationship to the subscriber and current eligibility rather than assuming the patient is not covered.
Step 3: Find the Member ID or Subscriber ID
Locate a field labeled Member ID, Member #, Subscriber ID, ID, or something similar.
This identifier is commonly needed for eligibility verification and claim processing.
Step 4: Find the Group Number
Look near the Member ID for labels such as:
Group
Group #
Group Number
Group ID
Not every health insurance plan has a Group Number.
Step 5: Check Pharmacy Information
If the plan includes pharmacy information on the same card, look for:
RxBIN
RxPCN
RxGRP
These fields are primarily associated with prescription claim processing.
Step 6: Check the Back of the Card
Important information may appear on the back, including provider phone numbers, member services information, claims instructions, pharmacy contacts, or other plan-specific details.
What Is the Member ID on a Health Insurance Card?
A Member ID is an identifier that a health plan uses to associate a member or covered account with insurance coverage.
Providers commonly use it during:
Patient registration
Eligibility verification
Benefits verification
Medical claim submission
Claim follow-up
Where Is the Member ID on an Insurance Card?
The Member ID is commonly displayed on the front of the card and may appear near the member’s name.
Possible labels include:
Member ID, Member #, ID, Identification Number, or Subscriber ID.
It may contain numbers, letters, or a combination of both.
Is Subscriber ID the Same as Member ID?
Sometimes, but not always.
Health insurers do not use these terms identically. A Member ID may identify a member or covered account, while a Subscriber ID may specifically refer to the person who holds the policy.
Under some plans, dependents may be associated with the subscriber’s identifier or have identifiers that differ slightly.
Therefore, use the identifier and terminology provided by the specific health plan rather than assuming Member ID and Subscriber ID are always interchangeable.
Is Member ID the Same as Policy Number?
Not necessarily.
Some insurers use Member ID, Subscriber ID, and Policy Number in similar ways, while others assign different meanings to each field.
If there is uncertainty, confirm the correct identifier with the health plan before submitting a claim.
What Is the Group Number on an Insurance Card?
A Group Number generally identifies the employer group, group policy, or benefit arrangement associated with the member’s coverage.
Group Numbers are especially common with employer-sponsored insurance.
Where Is the Group Number?
It is commonly located near the Member ID and may be labeled:
Group
Group #
Group Number
Group ID
However, not every insurance card has one.
Do All Insurance Cards Have a Group Number?
No.
Some individual and family health plans may not use a Group Number. Its presence depends on the insurer and type of coverage.
Is Group Number the Same as Member ID?
No, generally they serve different purposes.
A Member ID identifies the member or covered account, whereas a Group Number generally identifies the group or benefit arrangement associated with the insurance coverage.
Entering one in place of the other can cause eligibility or claim-processing problems.
What Is RxGRP on an Insurance Card?
RxGRP generally identifies the prescription benefit group associated with a member’s pharmacy coverage.
It is commonly found in the pharmacy section of an insurance card near RxBIN and RxPCN.
Pharmacies may use RxGRP together with other pharmacy identifiers when processing prescription claims.
What Does RxGRP Mean?
RxGRP is commonly used as an abbreviation for a prescription or pharmacy benefit group identifier.
Its exact format varies by health plan or pharmacy benefit administrator. It may contain numbers, letters, or both.
Is RxGRP the Same as Group Number?
No—not necessarily. RxGRP and the regular insurance Group Number can identify different aspects of your coverage.
The Group Number generally relates to the medical insurance group or benefit arrangement.
RxGRP, on the other hand, generally identifies the group associated with prescription drug benefits.
| Group Number | RxGRP |
| Primarily associated with medical coverage | Primarily associated with pharmacy coverage |
| May identify an employer/group benefit arrangement | Identifies a prescription benefit group |
| Often near Member ID | Usually near RxBIN and RxPCN |
| Used in medical insurance administration | Used in pharmacy claim processing |
Do not automatically enter the regular Group Number when a pharmacy or form specifically requests RxGRP.
What Is RxBIN on an Insurance Card?
RxBIN is a pharmacy claims routing identifier.
It helps route an electronic prescription claim to the appropriate pharmacy benefit processing system.
RxBIN is commonly a six-digit identifier and is usually located in the pharmacy section of the insurance card.
Where Is RxBIN?
Look for RxBIN near RxPCN and RxGRP.
If it isn’t displayed on your medical insurance card, you may have separate pharmacy benefit information or a separate prescription card.
Is RxBIN the Same as Member ID?
No.
The Member ID identifies the member or coverage information, while RxBIN is used primarily to route pharmacy claims.
They should not be used interchangeably.
What Is RxPCN on an Insurance Card?
RxPCN stands for Processor Control Number.
It works with other pharmacy identifiers to help direct a prescription claim within the appropriate pharmacy processing system.
RxPCN commonly appears next to RxBIN.
RxBIN vs RxPCN vs RxGRP: What’s the Difference?
These three identifiers are related to pharmacy benefits but perform different functions.
| Identifier | General Purpose |
| RxBIN | Routes the prescription claim toward the appropriate pharmacy processing system |
| RxPCN | Provides additional processing/routing information |
| RxGRP | Identifies the applicable prescription benefit group |
A pharmacy may need several of these identifiers, along with the Member ID, to process a prescription claim correctly.
What Is a Payer ID?
A Payer ID is an identifier used to route electronic healthcare transactions to the appropriate payer.
Medical billing teams and clearinghouses commonly use Payer IDs for electronic claim processing.
Where Is the Payer ID on an Insurance Card?
A Payer ID may not be printed on the insurance card.
Billing staff may need to obtain the correct identifier from:
Payer documentation
Payer portals
Clearinghouses
Practice management systems
Electronic claims resources
Providers should verify the appropriate Payer ID for the specific electronic transaction rather than assuming every transaction uses the same identifier.
Is Payer ID the Same as Group Number?
No.
A Payer ID is used for electronic healthcare transaction routing, whereas a Group Number generally identifies a group policy or benefit arrangement.
They serve different purposes and should not be entered interchangeably.
Medical Insurance Numbers vs Prescription Insurance Numbers
One of the easiest ways to understand an insurance card is to separate medical identifiers from pharmacy identifiers.
Common Medical Insurance Information
Medical claims frequently use:
Member ID or Subscriber ID
Group Number, when applicable
Payer information
Plan information
Common Prescription Insurance Information
Prescription claims may use:
Member ID
RxBIN
RxPCN
RxGRP
Some insurance plans combine medical and pharmacy benefits on one card. Others provide a separate prescription benefit card.
Front vs Back of a Health Insurance Card
Insurance cards vary considerably, but information is often divided between the front and back.
Front of the Card
You may find:
Member name
Member ID
Group Number
Plan/network information
RxBIN
RxPCN
RxGRP
Copay information
Back of the Card
You may find:
Member services phone number
Provider services information
Claims instructions or address
Pharmacy contact information
Prior authorization information
Website or portal information
Always check both sides when you cannot locate an identifier.
Health Insurance Card Example
Consider this fictional insurance card:
| Field | Example |
| Insurance Company | ABC Health Plan |
| Member Name | John Smith |
| Member ID | ABC123456789 |
| Group Number | 987654 |
| Payer ID | XXXXX |
| RxBIN | 123456 |
| RxPCN | ABC123 |
| RxGRP | RXGROUP |
This example is for educational purposes only. Real insurance cards vary by payer and plan.
Common Mistakes When Reading an Insurance Card
Insurance information errors can cause eligibility, billing, and pharmacy processing problems.
Common mistakes include:
Entering the Group Number as the Member ID
Assuming Subscriber ID and Member ID always mean exactly the same thing
Using Group Number when RxGRP is requested
Confusing RxBIN with RxPCN
Assuming every card displays a Payer ID
Assuming every plan has a Group Number
Using information from an outdated insurance card
Failing to verify current eligibility
Using old insurance information after a plan change
Healthcare practices should verify insurance information instead of relying solely on what is printed on the card.
How Medical Billing Teams Use Insurance Card Information
Accurate insurance information is an important part of the revenue cycle.
Medical billing teams use insurance identifiers for patient registration, eligibility verification, benefits verification, claim submission, claim follow-up, and denial prevention.
For example, entering an incorrect Member ID can prevent a payer from matching a claim with the correct coverage. Similarly, using the wrong payer information can affect electronic claim routing.
Right On Time Billing Services helps healthcare practices manage insurance verification, medical billing, claim follow-up, denial management, and other revenue cycle processes.
What Should You Do If You Can’t Find a Number?
First, check both sides of the insurance card.
If the information is still missing, use the health plan’s official member portal or contact the insurer. Providers may also use payer portals, clearinghouse resources, and eligibility systems when appropriate.
For missing pharmacy identifiers such as RxBIN, RxPCN, or RxGRP, contact the health plan or pharmacy benefit administrator.
What If Your Insurance Card Is Old?
Do not assume an insurance card confirms current coverage.
If your plan has changed, obtain your latest card and provide updated information to your healthcare providers and pharmacy.
Healthcare practices should verify eligibility and benefits before relying on previously stored insurance information.
Final Takeaway
The numbers on a health insurance card do not all serve the same purpose.
Member ID identifies the member or covered account. Group Number generally identifies a group or benefit arrangement. Payer ID helps route electronic healthcare transactions. RxBIN, RxPCN, and RxGRP are primarily associated with pharmacy benefit processing.
Most importantly, RxGRP should not automatically be treated as the same thing as your regular Group Number, and Member ID, Subscriber ID, and Policy Number should not be assumed to mean exactly the same thing across every health plan.
Because insurance card formats and terminology vary, members and healthcare providers should verify unclear information directly with the applicable health plan.
Frequently Asked Questions (FAQs)
Get clear and concise answers about health insurance cards, including how to find your Member ID, Group Number, Payer ID, RxBIN, RxPCN, and RxGRP, and understand what each number means for medical billing and insurance verification.
It usually appears near the top, labeled Member ID or ID.
It is the unique identifier assigned to an individual member.
It typically sits near the Member ID, labeled Group Number.
It generally identifies the employer-sponsored plan or insurance group.
It may not appear at all; billing teams often source it elsewhere.
It identifies the insurance payer during electronic healthcare transactions.
