Authorization utilization rate

Start with one authorization row

Lock the member, service, code or service label, provider type, location, approved quantity, unit convention, and effective period. If an authorization changes, decide whether the metric uses the original, final, or time-weighted approved amount and preserve each version.

Do not combine hours, visits, and 15-minute units until they share a verified conversion. Keep separate services on separate rows.

Choose the numerator intentionally

A numerator might count units that were:

• scheduled
• delivered
• documented and ready for billing
• submitted on claims
• accepted for adjudication
• adjudicated as payable

Each state answers a different question. “Used” is too vague for a reproducible metric. For care-delivery analysis, delivered eligible units are often more informative than paid units because payment includes coding and payer effects.

Define the denominator and window

A simple formula is:

delivered eligible units during the effective period ÷ approved units for the same service row and period × 100.

State how partial periods, overlapping authorizations, retroactive decisions, terminated coverage, appeals, and midperiod changes are handled. Use a mature cohort whose period has ended or whose observation cutoff is explicit. Open authorizations need a pace measure rather than a final utilization rate.

A fictional utilization calculation

Bright Orchard has a fictional authorization for 240 units over eight weeks. By the end date, accurate service records show 184 delivered eligible units. Authorization utilization is 184 ÷ 240 = 76.7%.

Eight delivered units remain held for documentation correction, so 176 are ready for claim release. Claim-release utilization is 176 ÷ 240 = 73.3%. Documentation readiness among delivered units is 176 ÷ 184 = 95.7%.

These rates should retain their labels. Calling all three “utilization” would hide the operational issue and could confuse care delivery with billing readiness.

Explain unused units by cause

The remaining 56 approved units may reflect holidays, illness, family choice, school, travel, staffing, authorization delay, clinical change, transition, discharge, or an unrealistic original schedule. Some causes are preventable; others are appropriate or outside the practice’s control.

Use neutral reason codes and let families and clinicians correct the record. Avoid treating disability, communication needs, or a requested accommodation as lack of commitment.

Pair the rate with pace and capacity

For an open authorization, compare delivered units with elapsed eligible time and the remaining feasible calendar. A straight-line pace can be a planning signal, but it should account for known closures, person availability, staff capacity, and clinical review.

Authorized units are a ceiling, not a prescription to fill every slot. Scheduling should follow clinical appropriateness, consent and assent when applicable, safety, qualified staffing, and the person’s priorities.

Segment before comparing teams

Rates can differ by service, payer, authorization length, location, staffing model, season, population, and clinical phase. Compare like cohorts and report counts alongside percentages.

Small denominators can swing sharply. A team with four authorizations should not be ranked against a team with forty without context. Use medians and distributions when a few large authorizations dominate total units.

Validate the data chain

Trace a sample from the payer notice through the authorization table, schedule, completed service record, claim release, and dashboard. Confirm that service codes, unit conversions, dates, cancellations, corrections, and authorization versions survive each handoff.

Look for duplicate services, visits counted before completion, units outside the effective period, overlapping approvals, and late entries that miss the reporting cutoff. Reconcile totals to a source ledger before leaders act on the rate. When data arrive late, restate the prior period with a visible revision note rather than silently changing history.

Assign metric ownership separately from clinical ownership. The data owner maintains definitions and quality checks; the qualified clinician interprets clinical implications for a case.

Use improvement controls that respect care

Investigate expired authorizations, delayed starts, repeated staffing gaps, mismatched schedules, and avoidable documentation holds. Assign each improvement to the owner who controls it.

Never reward delivery solely because units remain. Pressure to consume a payer ceiling can conflict with client choice, clinical judgment, school, rest, family life, and safe transition. Pair the metric with complaints, cancellations, continuity, access, outcomes, and adverse events.

Keep the source in scope

The CASP resources page provides access to organizational and ABA practice materials. Detailed guidance can require separate access or licensing. CASP does not define the authorization-utilization formula on this page; the calculation above is an editorial operating definition.

Review the metric quarterly for denominator drift, data-state changes, payer conversions, and unintended incentives. Preserve the formula version used for every historical report.