Modifier QJ is a HCPCS Level II modifier used when healthcare services or items are provided to a prisoner or patient in state or local custody, but the state or local government satisfies the Medicare payment requirements described in 42 CFR §411.4(b).

Normally, Medicare does not pay for services provided to individuals who are in custody under a penal statute or rule. However, Medicare may make payment if specific legal requirements are met, including that the state or local government requires the individual to repay the cost of medical services and actively pursues collection of those debts in the same manner as other debts.

Modifier

Modifier Name

Services/Items Provided to a Prisoner or Patient in State or Local Custody, However, the State or Local Government Meets the Requirements of 42 CFR §411.4(b)

Plain English Explanation

Modifier QJ tells Medicare:

“The patient is in state or local custody, but the government entity meets the Medicare requirements that allow payment for the covered service.”

Purpose

Modifier QJ is used to:

Identify services furnished to individuals in state or local custody.
Notify Medicare that the governmental entity satisfies the requirements of 42 CFR §411.4(b).
Allow Medicare to determine whether payment may be made.
Distinguish eligible custody claims from non-payable incarceration claims.

Understanding Modifier QJ

Patients in custody may include individuals who are:

Under arrest.
In jail.
In prison.
In detention facilities.
On medical furlough.
In halfway houses.
Under home detention.
In other forms of custody under a penal statute or rule.

Merely treating an incarcerated individual does not automatically qualify for Medicare payment.

Modifier QJ indicates that the governmental entity has informed the provider that:

State or local law makes the prisoner financially responsible for medical costs.
The government bills and pursues collection of those costs in the same manner as other debts.

When to Use Modifier QJ

Append Modifier QJ when:

Services are provided to a patient in state or local custody.
The governmental entity confirms compliance with 42 CFR §411.4(b).
Medicare payment is permitted under CMS regulations.
The claim is submitted to Medicare.

Examples include:

Emergency department visits.
Physician office services provided under approved custody arrangements.
Outpatient hospital services.
Durable Medical Equipment (when applicable).
Other covered Medicare services meeting CMS requirements.

When NOT to Use Modifier QJ

Do not use Modifier QJ when:

The patient is not in state or local custody.
Federal prisoner billing rules apply (different payment rules may govern).
The governmental entity does not meet the requirements of 42 CFR §411.4(b).
The service is otherwise non-covered by Medicare.
The payer is not Medicare and does not recognize Modifier QJ.

Medicare Rules

Medicare policy states:

Medicare generally does not pay for services furnished to individuals in custody.
Payment may be made only when the governmental entity satisfies 42 CFR §411.4(b).
Providers should append Modifier QJ to applicable Medicare claims.
For outpatient hospital claims, Modifier QJ is reported on each applicable service line during the incarceration period.
Providers should retain documentation supporting eligibility for Medicare payment.

Commercial Insurance Rules

Commercial insurance policies vary.

Many commercial insurers:

Do not recognize Modifier QJ.
Follow contractual agreements with correctional facilities.
Bill governmental agencies directly.
Use payer-specific billing procedures.

Always verify payer requirements before claim submission.

Documentation Requirements

Documentation should include:

Patient’s custody status.
Name of the correctional or governmental agency.
Confirmation that the governmental entity meets 42 CFR §411.4(b).
Medical necessity.
Complete clinical documentation.
Date of service.
Provider signature.
Any written notification received from the governmental entity.

Real Billing Examples

Example 1 – Emergency Department Visit

A Medicare beneficiary in county jail is transported to a hospital emergency department. The county confirms that it meets the requirements of 42 CFR §411.4(b).

Billing

Appropriate ED CPT code
Modifier QJ

Example 2 – Outpatient Specialist Visit

A prisoner is evaluated by a cardiologist while in state custody.

The state certifies compliance with Medicare payment requirements.

Billing

CPT 99214-QJ

Example 3 – Hospital Outpatient Procedure

An incarcerated patient undergoes an outpatient diagnostic procedure.

Billing

Appropriate HCPCS/CPT code
Modifier QJ on each applicable outpatient line.

Example 4 – Durable Medical Equipment

A Medicare-covered DME item is furnished to a qualifying patient in custody.

Billing

Appropriate HCPCS code
Modifier QJ, when Medicare requirements are met.

Example 5 – Incorrect Billing

A provider submits a Medicare claim for a prisoner but does not verify that the governmental entity satisfies 42 CFR §411.4(b).

The claim may be denied because Medicare payment requirements were not established.

CMS-1500 Claim Example

Field	Example
CPT	99213
Modifier	QJ
Diagnosis Pointer	I10
Units	1

Common Denials

Missing Modifier QJ.
Governmental entity does not meet 42 CFR §411.4(b).
Patient not eligible for Medicare payment while in custody.
Insufficient documentation.
Incorrect payer billed.
Custody status not verified.

Correcting Denials

Verify the patient’s custody status.
Confirm that the governmental entity meets 42 CFR §411.4(b).
Obtain supporting documentation from the correctional authority.
Append Modifier QJ if appropriate.
Submit a corrected claim.
Appeal with supporting documentation if payment is permitted.

Coding Tips

Modifier QJ does not guarantee Medicare payment.
Always verify eligibility under 42 CFR §411.4(b).
Maintain written documentation from the governmental entity.
Use QJ only for applicable Medicare claims.
Review current CMS guidance because custody policies may change.

Modifier QJ vs Modifier Q6

Modifier	Description
QJ	Services furnished to eligible prisoners or patients in state or local custody
Q6	Services furnished by a locum tenens (substitute) physician

Modifier QJ vs Modifier QW

Modifier	Description
QJ	Prisoner or patient in qualifying custody
QW	CLIA-waived laboratory test

Modifier QJ vs Modifier GA

Modifier	Description
QJ	Custody-related Medicare billing
GA	Waiver of liability statement (ABN) on file

Frequently Asked Questions (FAQs)

Q1. What does Modifier QJ mean?

Answer: It identifies services furnished to a prisoner or patient in state or local custody when the governmental entity meets the Medicare payment requirements in 42 CFR §411.4(b).

Q2. Does Medicare always pay for prisoners?

Answer: No. Medicare generally does not pay for services furnished to individuals in custody unless the exceptions in 42 CFR §411.4(b) are satisfied.

Q3. Who confirms that the payment requirements are met?

Answer: The appropriate state or local governmental agency informs the provider that the statutory requirements are satisfied.

Q4. Is Modifier QJ used for every incarcerated patient?

Answer: No. It is used only when the governmental entity qualifies under Medicare’s regulatory requirements.

Q5. Can commercial insurance require Modifier QJ?

Answer: Generally, no. Most commercial payers use their own correctional healthcare billing rules.

AR Caller Tips

When following up on QJ claims:

Verify the patient’s custody status.
Confirm that the governmental entity meets Medicare requirements.
Check whether Modifier QJ was appended.
Obtain documentation supporting payment eligibility.
Record payer representative names and reference numbers.

Interview Questions

Question 1

What is Modifier QJ used for?

Answer: It identifies services provided to prisoners or patients in state or local custody when Medicare payment requirements are met.

Question 2

Does Modifier QJ guarantee payment?

Answer: No. Medicare pays only if the conditions in 42 CFR §411.4(b) are satisfied.

Question 3

Who determines whether the governmental entity qualifies?

Answer: The applicable state or local governmental agency, consistent with CMS regulations.

Question 4

Can Modifier QJ be used for all correctional facility claims?

Answer: No. It applies only when Medicare’s specific regulatory exceptions are met.

Practice Scenario

Scenario

A Medicare beneficiary incarcerated in a county jail is transported to a hospital for outpatient treatment. The county confirms that state law requires inmates to repay medical expenses and actively pursues collection of those debts.

Question

How should the claim be billed?

Answer

Report:

Appropriate CPT/HCPCS code
Modifier QJ

Maintain documentation from the governmental agency confirming compliance with 42 CFR §411.4(b).

Related Medicare Special Modifiers

Q6 – Service Furnished by a Locum Tenens (Substitute) Physician
Q5 – Service Furnished Under a Reciprocal Billing Arrangement
QW – CLIA Waived Test
GA – Waiver of Liability Statement Issued

Common Billing Mistakes

Using QJ without verifying governmental eligibility.
Assuming Medicare automatically covers incarcerated beneficiaries.
Missing documentation from the governmental agency.
Billing the wrong payer.
Omitting Modifier QJ on qualifying claims.

Key Takeaways

Modifier QJ identifies services provided to prisoners or patients in state or local custody when Medicare payment exceptions apply.
Medicare generally excludes payment for individuals in custody unless 42 CFR §411.4(b) requirements are met.
Documentation from the governmental entity is critical.
Modifier QJ supports claim processing but does not guarantee payment.
Always verify current CMS guidance before billing.

References

CMS Medicare Claims Processing Manual, Pub. 100-04, Chapter 1, Section 10.4 – Individuals in Custody Under a Penal Statute or Rule.
CMS Transmittal R1944CP – Modifier QJ Requirements.
Noridian Medicare – Modifier QJ Guidance.
HCPCS Level II Code Book.
CPT® Professional Edition (American Medical Association).

Conclusion

Modifier QJ is a specialized Medicare modifier used when covered services are provided to prisoners or patients in state or local custody under circumstances that satisfy 42 CFR §411.4(b). Proper use requires verification that the governmental entity meets Medicare’s payment requirements, accurate documentation, and correct claim reporting. Understanding Modifier QJ helps providers comply with Medicare regulations, reduce denials, and ensure proper reimbursement when statutory exceptions apply.

Educational Disclaimer

This article was prepared with the assistance of artificial intelligence (AI) for educational and informational purposes. It is based on publicly available CMS guidance, Medicare Claims Processing Manual provisions, HCPCS Level II guidance, and general medical billing principles. It is not an official publication of CMS or the American Medical Association (AMA). Always consult the latest CMS Medicare Claims Processing Manual, HCPCS Level II Code Book, CPT® Professional Edition, applicable Medicare Administrative Contractor (MAC) guidance, and payer-specific billing policies before coding, billing, or submitting claims.