Arkansas Medicaid plan coverage codes are four-digit “aid category” numbers the Department of Human Services assigns to you based on how you qualified for Medicaid, and each number maps to a specific package of covered services. DHS publishes the mapping in a document called the Aid Category to Benefit Plan Crosswalk, which translates every code into the benefits it unlocks.1Arkansas Department of Human Services. Aid Category to Benefit Plan Crosswalk If your code is wrong, or if you don’t know what it covers, you can end up paying for services that should be free or having legitimate claims denied.
What the Four-Digit Code Controls
Your aid category is the state’s shorthand for your eligibility pathway. It sits in the DHS eligibility verification system and may appear as an indicator on your Medicaid card, and providers read it at check-in to know what to bill and what cost-sharing applies.2Arkansas Department of Human Services. Arkansas Medicaid – Workers with Disabilities and Transitional Medicaid Cost Sharing Most aid categories give you the full range of services described in the Arkansas Medicaid State Plan. A few offer only a limited benefit package, such as family planning services alone.
The plan coverage code is not the same thing as the procedure codes that show up on a doctor’s bill. Medical offices use CPT and HCPCS codes to describe what they did.3Justia. Arkansas Administrative Code 016.06.15-020 Your aid category determines which of those procedure codes Arkansas Medicaid will actually pay for. One describes the service; the other describes your benefit package.
How to Look Up Your Code
DHS’s Division of Medical Services keeps the Aid Category to Benefit Plan Crosswalk online. It lists every four-digit code alongside the benefit plan it belongs to, so once you know your number you can read straight across to see what’s covered.1Arkansas Department of Human Services. Aid Category to Benefit Plan Crosswalk
To find your own code, sign in to Access Arkansas at access.arkansas.gov. The portal lets you check eligibility status, report changes, and upload documents. The crosswalk itself is updated periodically as policy changes, so confirm you’re looking at the current version before you rely on a specific definition.
What the Major Code Ranges Cover
The code ranges in the crosswalk group people by how they qualified. The programs below cover most Arkansas recipients.
Adult Expansion (0600 Series)
Adult expansion codes fall in the 0600 series and correspond to ARHOME, which replaced Arkansas Works in January 2022. ARHOME uses Medicaid funds to buy private coverage for eligible adults aged 19 through 64 with income below 138 percent of the federal poverty level.4Arkansas Department of Human Services. ARHOME Most enrollees get their care through Blue Cross Blue Shield or Ambetter while remaining covered by Medicaid. Adults determined to be medically frail get traditional fee-for-service Medicaid instead, and their code reflects that. So two people both in the 0600 range can have different benefit experiences depending on which specific code was assigned.
ARKids First (0100 Series)
ARKids CHIP codes start in the 0100 range.1Arkansas Department of Human Services. Aid Category to Benefit Plan Crosswalk The program has two tiers based on family income. ARKids A carries no premiums and no copayments. ARKids B requires copayments, generally $10 per visit and $5 per prescription, capped annually at five percent of the family’s gross income.5Arkansas Department of Human Services. What Does ARKids Pay? If a provider tries to charge your child a copay under ARKids A, the code on file is your evidence that nothing is owed.
TEFRA
TEFRA aid categories cover children under 19 with a disability who receive care at home rather than in an institution. Children living in or getting extended care in an institution are not eligible. Some families pay no premium; others pay on a sliding scale based on income.6Arkansas Department of Human Services. TEFRA
PASSE
If your code places you in the Provider-Led Arkansas Shared Savings Entity system, you have complex behavioral health needs or a developmental or intellectual disability, and an Independent Assessment scored you at Tier II or Tier III. At those tiers you must get all non-excluded Medicaid services through your assigned PASSE.7Legal Information Institute. Arkansas Code 016.06.18-012 – Provider-Led Arkansas Shared Savings Entity (PASSE) The PASSE coordinates your care instead of leaving you to line up referrals across multiple providers.8Arkansas Department of Human Services. PASSE – Provider-Led Arkansas Shared Savings Entity
Medicare Savings Programs
If you have Medicare and limited income, Arkansas assigns aid categories tied to the Medicare Savings Programs. The Qualified Medicare Beneficiary (QMB) category pays your Medicare Part A and Part B premiums plus deductibles, coinsurance, and copayments. In 2026, QMB income limits are $1,350 per month for an individual and $1,824 for a married couple, with resource limits of $9,950 and $14,910. The Specified Low-Income Medicare Beneficiary (SLMB) category pays only your Part B premium; monthly income limits are $1,616 for an individual and $2,184 for a couple.9Medicare.gov. Medicare Savings Programs Both categories also qualify you for Extra Help with prescription drug costs.
Plan Coverage Codes vs. EOB Codes
People often confuse the aid category on their record with the codes printed on an Explanation of Benefits. They are different things. An EOB isn’t a bill; it’s a summary of how a claim was processed, and the codes on it explain the outcome of that specific claim, not your overall eligibility.
Two types of EOB codes matter most. Claim Adjustment Reason Codes (CARCs) give the financial reason a payment was reduced or denied, such as a service that exceeded a benefit maximum or a duplicate claim. Remittance Advice Remark Codes (RARCs) give a non-financial explanation, like missing prior authorization. Remark codes are usually two or three letters and numbers.10Centers for Medicare & Medicaid Services. How to Read an Explanation of Benefits DHS publishes a separate spreadsheet, the National Codes Crosswalk to Arkansas EOB Codes, that translates them into plain language.11Arkansas Department of Human Services. Codes If you’re trying to figure out why a specific claim was denied, that spreadsheet is what you want. If you’re trying to figure out what benefit package you’re in, the Aid Category crosswalk is what you want.
If Your Code Looks Wrong or a Claim Was Denied
An incorrect aid category can put you in the wrong benefit plan, and a wrong plan can generate denials for services that should be covered. Start by pulling your record through Access Arkansas and comparing it to the crosswalk. If the code doesn’t match your circumstances, report the discrepancy through the portal and ask DHS to review the eligibility determination.
If DHS denies eligibility, changes your benefits, or terminates coverage, federal law gives you the right to a fair hearing.12eCFR. 42 CFR 431.220 – When a Hearing Is Required In Arkansas you have 90 calendar days from the date on the decision letter to request a state fair hearing through the DHS Office of Appeals and Hearings, by mail, fax, phone, or email. If you’re already getting services that DHS wants to cut, you can ask for those services to continue during the appeal, but only if you make that request within 10 calendar days of the letter. Win, and services stay uninterrupted. Lose, and DHS may ask you to repay the cost of what was provided while the appeal was pending. The Office of Appeals and Hearings can be reached at 501-682-8622, fax 501-404-4628, or DHS.appeals@dhs.arkansas.gov.
One more protection worth knowing. Federal rules require providers to submit Medicaid claims within 12 months of the date of service.13eCFR. 42 CFR 447.45 – Timely Claims Payment If a provider misses that deadline, the claim gets denied and the provider cannot bill you for the balance. If a billing office lost track of a claim and comes after you a year later, the missed filing window is your defense. You are not responsible for a provider’s failure to bill Medicaid on time.
Also tell DHS about any other health coverage you have. Medicaid is the payer of last resort, so employer plans, a spouse’s plan, or court-ordered coverage pay first. Arkansas law requires insurers to share coverage information with DHS.14Justia. Arkansas Code 20-77-306 – Liability of Third Parties If you have other coverage and don’t report it, claims can be reversed later when DHS finds the other policy. The same statute also blocks your other insurer from denying a Medicaid-related claim solely because the provider skipped prior authorization or didn’t present the insurance card at the point of service.