Revenue leak
Unpaid custodial days
Root cause
Managed Medi-Cal authorization lapsed
How 247MBS closes it
Managed-LTC authorization calendar
Skilled Nursing billing · California
Skilled nursing billing services in California now operate inside a payer landscape that shifted underneath the industry: under CalAIM, institutional long-term care was carved into Medi-Cal managed care statewide, so the nursing-facility benefit that used to bill fee-for-service increasingly runs through a managed-care plan — all on top of some of the heaviest Medicare Advantage enrollment in the country. 247 Medical Billing Services (247MBS) has managed that institutional revenue cycle since 2005, and in the nation's largest and most plan-dense SNF market, plan fluency and clean MDS-to-claim discipline are what protect the margin. Every California SNF we serve gets a dedicated account manager, a free 360° reporting dashboard, and HIPAA plus SOC 2 Type II security.
| Factor | California reality |
|---|---|
| Medicaid LTC model | Medi-Cal with CalAIM LTC carve-in — institutional long-term care in managed care statewide |
| Long-stay payment | Plan-managed nursing-facility rate with the resident's share of cost applied |
| Rate basis | Facility-specific Medi-Cal rates (AB 1629 lineage) administered through plans |
| Medicare Advantage | Among the highest penetration nationally; managed Medicare dominates skilled rehab |
| Metros served | Los Angeles, San Diego, San Jose, San Francisco, Sacramento |
The CalAIM carve-in is the payer reality that now defines California SNF billing. For years, a facility billed Medi-Cal fee-for-service for its long-stay residents; with institutional long-term care moved into managed care statewide, that same custodial resident increasingly belongs to a Medi-Cal managed-care plan that authorizes the level of care, administers the rate, and applies the resident's share of cost. A building still running its business office on the old fee-for-service muscle memory will misroute claims and let managed authorizations lapse. Layer California's enormous Medicare Advantage census on top — heaviest in Los Angeles, the Bay Area, and San Diego — and the skilled rehab side arrives pre-loaded with prior authorization and continued-stay review. So a California facility is now managing plan logic on both the custodial and the skilled track, across dozens of payers that each run their own portal and rules. 247MBS runs California accounts around that dual-managed reality, coordinating plan authorization, MDS accuracy, and share-of-cost tracking as one disciplined workflow so no delivered day slips through the seams.
Traditional Medicare Part A pays a per-diem built from the five case-mix components scored on the MDS, Medi-Cal (increasingly through managed-care plans under CalAIM) pays a nursing-facility rate net of the resident's share of cost, and Medicare Advantage plans pay negotiated rates under their own authorization rules. The table shows how a California skilled stay converts into a paid institutional claim.
| Payment driver | What sets it | Where it lands on the claim |
|---|---|---|
| Case-mix rate | PT, OT, SLP, Nursing & NTA from the 5-day MDS | HIPPS code on revenue code 0022 |
| Per-diem taper | Variable per-diem adjustment after day 20; NTA front-loaded | Bill type 21X on the UB-04/837I |
| Covered days | Qualifying 3-day inpatient stay; up to 100 days per benefit period | Days 1-20 in full, days 21-100 coinsurance |
| Medi-Cal long-stay | Managed LTC authorization; share of cost | Plan rate net of resident share |
| MA managed stay | Prior authorization & continued-stay approval | Plan authorization number on the claim |
| SNF Part B | Residents off Part A or with days exhausted | Bill type 22X, therapy modifiers GP/GO/GN |
The decision to outsource skilled nursing billing in California usually turns on sheer payer volume. Can an in-house office keep managed Medi-Cal authorizations current under CalAIM, reconcile share of cost every month, chase Medicare Advantage approvals across dozens of plans, and still tie every Part A claim to a clean, timely MDS? In the country's most fragmented SNF payer market, that is more coordination than most business offices can hold. As a medical billing services company built for institutional long-term care, 247MBS runs the whole revenue cycle — eligibility and benefit verification, MDS and PDPM billing support, denial management, credentialing, and A/R recovery — under one accountable team. Our metrics are dependable: a 99% first-pass clean-claim rate, up to 40% fewer denials, 90% of worked denials recovered, and days in A/R held under 25, backed by a 98% client retention rate across two decades of professional SNF work. We are not a general billing company learning CalAIM on your dime; we are a billing services company that already knows how California's carve-in and MA-saturated markets behave. See how our statewide footprint works on the California billing overview.
Revenue review
A certified SNF billing specialist reviews your coding, unit counts, authorizations and aged A/R against the payers you actually bill in California — and puts a number on what your current process is leaving on the table.
A SNF specialist will reach out within one business day.
A SNF specialist will reach out within one business day.
California leaks cluster around managed authorization and share-of-cost accuracy. Under the CalAIM carve-in, a long-stay resident whose managed-plan authorization was never renewed generates unpaid custodial days, and a share-of-cost figure applied late or wrong shorts the claim. With MA penetration among the highest in the nation, a missing prior authorization vaporizes a skilled stay outright, and continued-stay downgrades bleed days off the back end. Because the state runs so many plans, claims are also lost simply to misrouting — sending a resident's stay to the wrong payer. The universal SNF traps still apply — a late five-day MDS that misclassifies the case-mix group, and consolidated-billing confusion that denies a bundled service or leaves an excluded one unbilled.
Unpaid custodial days
Managed Medi-Cal authorization lapsed
Managed-LTC authorization calendar
Short long-stay claim
Share of cost applied late or wrong
Monthly share-of-cost reconciliation
Denied MA stay
No prior authorization at admission
Authorization tracking from day one
Misrouted claim
Resident sent to the wrong plan
Eligibility and plan-assignment verification
Unbilled ancillary
Bundled versus excluded confusion
Coder-verified consolidated-billing map
We bill for the full spectrum of California skilled nursing operators — large multi-facility SNF chains and regional operators across Los Angeles County, freestanding for-profit buildings in San Diego and Sacramento, non-profit and faith-based nursing homes, hospital-based SNF units tied to the Bay Area's academic systems around San Francisco and San Jose, short-stay rehab-to-home facilities cycling census quickly, and long-term custodial nursing homes carrying deep Medi-Cal liability. We also support memory-care-heavy buildings, county and municipal nursing facilities, small facilities in the Central Valley, and higher-acuity ventilator and subacute units managing complex NTA-driven residents. Whether you run one building in Sacramento or a portfolio from Los Angeles to the Bay, our skilled nursing facility billing services in California scale to your census, plan mix, and MDS schedule without adding headcount to your business office.
Medical billing for skilled nursing in California means mastering two managed tracks at once, and 247MBS runs both under one accountable team. On the custodial side we secure and renew Medi-Cal managed-LTC authorizations under CalAIM, reconcile each resident's share of cost every month, and confirm plan assignment so no long-stay day is misrouted. On the skilled side we verify the Medicare Part A benefit and the three-day qualifying stay, keep every PDPM rate tied to a clean 5-day MDS, and chase Medicare Advantage prior authorization across the state's dense plan roster from Los Angeles to Sacramento. Facilities gain a 99% first-pass clean-claim rate, up to 40% fewer denials, and A/R days under 25. Request a revenue review to see where revenue is leaking.
Each city page covers the local payer mix, the practices we bill for there, and the denials we prevent.
These are the California markets we cover in depth. We bill SNF practices right across the state — tell us where you are and we will walk you through billing in your area.
CalAIM moved institutional long-term care into Medi-Cal managed care statewide, so many long-stay residents now belong to a managed-care plan rather than fee-for-service Medi-Cal. We verify plan assignment, secure and renew level-of-care authorization, apply the correct share of cost, and work managed denials so custodial days are paid.
Yes. California carries some of the highest MA penetration in the country, so we verify benefits at admission, secure prior authorization, track continued-stay reviews across many plans, manage NOMNC deadlines, and appeal downgrades so delivered skilled days are paid.
Yes. We manage multi-county portfolios under one accountable team, adapting to each managed-care plan's rules so a chain running beds from Los Angeles to Sacramento bills the same clean way in every building.
We work to a 24-hour submission standard once documentation clears the pre-bill triple-check, so census, MDS, and eligibility are reconciled before the claim drops rather than after a denial forces rework.
Whether you are a solo practice or a multi-site group, we bill Skilled Nursing across California under one dedicated account manager and a live dashboard — and treat every counted unit, authorization and appeal as recoverable revenue until it is safely paid.
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