Washington Nursing Facility Specialized Add-Ons: Reconcile Authorization, Days and Payment

Washington nursing facility payment review needs a separate chain for specialized services. A resident can have a valid base-rate stay while an add-on is unapproved, outside its authorized dates or billed with the wrong unit. Finance should identify which part of the payment is supported before pursuing a variance.

State Plan Attachment 4.19-D Part I, Section XIX requires preauthorization for the medically necessary specialized services it describes and distinguishes its fee-schedule branches. The DSHS rate index separately publishes facility base rates and specialty rates. Its current base listing is effective September 1, 2026; the specialty schedule is marked updated July 1, 2026.

Create an authorization-to-service record

The record should identify the resident, facility, authorized service, approval identifier, start and end dates, quantity or frequency, payment unit, applicable rate version and any conditions. Link actual service evidence to that record. A diagnosis, care plan or census entry alone does not replace the payment authorization.

Different specialized services may use different units or rate sources. The daily arithmetic below is valid only for the fictional daily authorization assumed in the example. Do not apply it to an hourly or otherwise limited service.

Reconcile a month with a gap

Assume a fictional 30-day month with an otherwise payable $300 daily base rate. A separately authorized specialty service has an invented $80 daily add-on. The resident remains in the facility all month. The first authorization covers days 6–20, and a subsequent approval covers days 24–30; days 21–23 are not supported by an approval in the file.

The supported combined expectation is $10,760. The three-day gap has a $240 sensitivity, but it is not part of the supported add-on amount. The service team can document what occurred and request the proper review; finance cannot backdate an approval.

If the payer remits $9,000 base and $1,520 add-on, the supported add-on difference is $240. That happens to equal the gap sensitivity, but the two $240 amounts have different causes. Trace which 19 days were paid before deciding whether the discrepancy concerns approved days, a unit limit or a rate issue.

Distinguish rate and authorization errors

Suppose all 22 approved units were paid at $76 rather than the assumed supported $80. The variance would be 22 × $4 = $88. If only 19 units were paid at $80, it would be $240. A single total-dollar comparison cannot distinguish those cases.

Retain the exact schedule entry and effective date supporting $80. A later schedule should not automatically change earlier service dates. If the facility’s base rate also changes, split that interval independently; there is no reason for the base-rate publication date and specialty approval date to coincide.

Resolve the exception with the right evidence

For an authorization gap, provide the missing approval question and service interval to the designated authorization owner. For an approved-unit mismatch, provide the approval, actual units, claim and remittance. For a rate mismatch, include the schedule version and applicable service identifier. A general request for “the unpaid add-on” leaves the reviewer to reconstruct the issue.

The completed package shows supported base payment, supported specialty payment, unresolved authorization sensitivity and the payer disposition. It should also make clear whether a changed state determination requires a correction to an earlier claim.

In a platform review, ask staff to explain why two separate $240 figures must not be combined into a $480 underpayment. A system that preserves the authorization interval, rate and payment-unit evidence supports a defensible financial decision across specialized care workflows.