This isn't consumer Medicaid information. It's the operator guide — how billing works, what MCOs require, how prior authorizations expire quietly, and what it costs when any of it goes wrong. Written for the agency owner who is the billing department, the compliance officer, and the scheduler all at once.
Medicaid home care billing isn't one process — it's six sequential gates, each with its own failure mode. The visit can be delivered correctly, the caregiver can be qualified, the patient can be properly enrolled, and the claim can still get denied because of what happened at gate three. Understanding where the process breaks — and what it costs when it does — is the foundation of running a Medicaid home care agency without losing money you already earned.
Before a Medicaid patient receives home care services, their payer — either the state Medicaid agency or their MCO — must authorize the care. The authorization specifies how many hours per week the patient is approved for, which service types, and during what time period. Delivered care that exceeds the authorization or falls outside the approved service type cannot be billed.
Federal law requires Electronic Visit Verification for all Medicaid personal care visits. The EVV record must match the authorization: caregiver identity, patient identity, service location, and start and end time. States use different EVV systems — some mandate a specific vendor (HHAeXchange in Georgia, for example), others allow compliant options. EVV exceptions — GPS drift, forgotten clock-outs, time discrepancies — must be resolved before the billing deadline or the visit becomes unbillable.
Each claim must include the correct service code for the service delivered (payer-specific — MCOs often differ from fee-for-service codes), the caregiver's NPI and credential status at time of service, the patient's Medicaid ID, and a reference to the active authorization. Service code errors are among the most common preventable denial causes — and each MCO may require different codes for the same service type.
Fee-for-service Medicaid claims go to the state's claims portal (GAMMIS in Georgia, TMHP in Texas, the Louisiana Medicaid portal). Managed care claims go directly to each MCO's billing system — which means an agency with four MCO contracts is managing four separate submission portals with four sets of rules. Each has its own timely filing window, claim format requirements, and response timeline.
Industry denial rates run 10–15%. Most denials are preventable — EVV mismatch, expired authorization, wrong service code, credential gap. The ones that reach the payer and come back denied require identification of the specific error, correction, and resubmission within the appeal window. Most agencies work roughly one-third of their denials. The rest become permanent revenue losses from visits that already happened.
When payment arrives — typically 30–60 days after claim submission for most Medicaid payers — it needs to be reconciled against submitted claims. Underpayments, partial payments, and unapplied remittances need to be identified and addressed. Agencies without systematic reconciliation may miss underpayments that accumulate across hundreds of claims per month.
If you're running an agency, you already know most of these. If you're building toward your first patient — as Tasha is in Baton Rouge, or as every nurse who's starting an agency is — these are the operational vocabulary you'll need to understand before your first visit happens.
HCBS waivers are the Medicaid programs that fund home care, personal care, and related services for elderly and disabled individuals as an alternative to nursing facility placement. Each state administers its own HCBS programs with state-specific eligibility, service definitions, and billing requirements. Most Medicaid home care agencies serve patients through one or more HCBS waiver programs.
What this means for your agency: your billing, documentation, and care plan requirements are shaped by the specific HCBS waiver your patients are enrolled in. EDWP in Georgia. EDA Waiver in Louisiana. STAR+PLUS in Texas. Each has its own rules.
Most states have moved their Medicaid populations into managed care. Instead of billing the state Medicaid agency directly, you bill the MCO that manages each patient's care. MCOs manage prior authorizations, have their own billing portals, and set their own service codes and timely filing windows — on top of the state Medicaid baseline.
What this means for your agency: state Medicaid enrollment is not enough. You need a contract with each MCO in your service area to serve their members. Four MCOs in your area = four credentialing applications, four billing portals, four sets of rules to understand.
Every Medicaid home care patient has a prior authorization — the payer's approval to receive a specific number of care hours during a specific period. The authorization has a start date and an end date. Hours not scheduled and delivered before the end date expire permanently. No retroactive billing. No carryover.
What this means for your agency: if you're not watching utilization — comparing approved hours against scheduled hours for every patient every week — you're losing revenue quietly every authorization cycle. Jackie doesn't know her utilization rate. Denise knows hers is lower than it should be. Most agencies are.
Federal law requires EVV for all Medicaid personal care and home health visits. The EVV record must confirm that a qualified caregiver visited the correct patient at the correct address during the authorized service window. When the EVV record doesn't match what's billed, the claim gets denied.
What this means for your agency: EVV exceptions — GPS drift, missed clock-outs, time discrepancies — need to be resolved before the billing deadline or the visit becomes unbillable. States have different EVV system requirements. Some mandate specific vendors. All require the same result: a clean visit record that matches the claim.
Every Medicaid service has a billing code — the specific identifier that tells the payer what was delivered. Personal care services, homemaker services, skilled nursing visits, respite care — each has its own code. The same service can have different codes for different payers. A code that works for fee-for-service may not match an MCO's contract requirement for the same service.
What this means for your agency: submitting the wrong service code is one of the most common preventable denial causes. Getting it right requires knowing the correct code for each service type, each payer, each MCO contract — and updating when payer rules change.
Medicaid and MCOs set deadlines for how long after a service date a claim can be submitted. Most state Medicaid fee-for-service programs allow 90 days to 12 months. MCOs often have shorter windows — 90 to 180 days is common. After the timely filing deadline, the claim is denied permanently. No appeal. No exception.
What this means for your agency: agencies with unworked denial backlogs are at risk of older claims crossing the timely filing window while the team is focused on newer ones. Every claim that crosses the timely filing deadline after being denied is revenue that was earned, billed, and then permanently forfeited.
Authorization drain, claims drain, and compliance gaps aren't abstract operational failures — they have specific per-patient-per-month costs that add up to a number most agency owners have never calculated but would recognize immediately if they saw it.
Georgia's HHAeXchange EVV mandate does not apply in Texas. Texas STAR+PLUS managed care rules do not apply in Louisiana. North Carolina's CAP/DA waiver has requirements that don't exist in Florida. Every state page below answers the same questions specific to that state: how billing works, which MCOs you need to contract with, what EVV system you need, and what the authorization rules look like for the waiver programs your patients are most likely enrolled in.
GAPP enrollment, GAMMIS billing, EDWP and NOW/COMP waiver programs, HHAeXchange EVV, Amerigroup / CareSource / Peach State / WellCare MCOs. Jackie runs a 30-patient agency in Stockbridge.
Georgia Medicaid operator guide →HHSC licensing, TMHP billing, STAR+PLUS managed care, PAS service type, MCO contracting by Service Delivery Area. Denise runs a 90-patient agency in Houston — eight years of making every mistake available.
Texas Medicaid operator guide →LDH licensing, EDA and CCW waiver programs, Healthy Louisiana managed care MCOs, HCBS provider requirements. Tasha is 6-9 months from opening in Baton Rouge.
Louisiana Medicaid operator guide →AHCA oversight, Long-Term Care managed care program, HCBS waivers, iBudget waiver, EVV requirements. Florida's LTC program structure and multiple managed care plans.
Florida Medicaid operator guide →NC Medicaid Managed Care transition, Innovations Waiver, CAP/DA and CAP/C programs, PHP contracting. NC's 2021 managed care shift and what it means for HCBS agencies.
North Carolina Medicaid operator guide →Alabama Medicaid Agency oversight, Elderly and Disabled waiver, ID waiver, EVV requirements, primarily fee-for-service structure with managed care transition underway.
Alabama Medicaid operator guide →100+ agencies across these states. The billing, EVV, and authorization requirements that produce CareDrain losses are state-specific — but the pattern is the same everywhere. Authorization hours expire. Claims go unworked. Compliance gaps interrupt billing. The state guides show what the pattern looks like in your state. The diagnostic shows what it's costing your agency specifically.
Separately. State Medicaid provider enrollment gives you the ability to bill fee-for-service Medicaid patients — the minority of Medicaid patients in most states. Most Medicaid patients are enrolled in a managed care plan (MCO), and to serve them, you need a separate contract with each MCO. Each MCO has its own credentialing process, provider application, and contracting timeline — typically 60-120 days per MCO. In states like Georgia and Texas where most patients are in managed care, MCO contracting is often more important to your initial census than state Medicaid enrollment itself.
Regular state plan Medicaid may cover some home care services without a waiver — typically skilled nursing and home health aide visits for medically necessary care. HCBS waivers cover a broader range of long-term home and community-based services (personal care, homemaker services, respite, etc.) for individuals who would otherwise qualify for nursing facility placement. HCBS waiver enrollment is separate from regular Medicaid enrollment — agencies need to apply specifically for each waiver program they want to serve. HCBS waiver patients represent the majority of Medicaid home care personal services revenue for most agencies.
Authorization renewals vary by payer and program — some renew automatically based on reassessment, others require active renewal applications before the current period expires. What happens if you miss the renewal date depends on the payer: some MCOs allow retroactive authorization in limited circumstances; most do not. Visits delivered after an authorization expires — even by one day — are typically not billable. CareBravo's authorization management function tracks renewal dates for every active patient and alerts before expiration, including when an active authorization is approaching its renewal date, not just its end date.
Yes, and dual-eligible patients (those with both Medicare and Medicaid) require additional coordination. Medicare typically covers skilled nursing and home health services; Medicaid covers personal care and long-term services. Dual-eligible patients may have services billed to different payers depending on the service type, and coordination of benefits rules affect which payer is primary. Most Medicaid home care agencies serve primarily Medicaid personal care patients, but dual-eligibility is common in the elderly patient population. The billing rules for dual eligibles are state-specific and plan-specific.
Required caregiver credentials vary by state and service type, but most Medicaid home care agencies must maintain current CPR/First Aid certification, background checks (with state-specific renewal frequency), TB clearance, state-required training hours, and in many states a CNA or HHA certification for caregivers providing personal care services. Some MCOs add their own credentialing requirements on top of state minimums. When a required credential lapses, visits by that caregiver during the lapsed period may not be billable — and state surveyors will note the deficiency.
The state guides explain how Medicaid billing works in your state. The diagnostic shows you what the billing gaps are costing your specific agency — authorization hours expiring, claims denied and unworked, compliance gaps interrupting billing — on your real records, in about 15 minutes.