Claude Sonnet 5.5 (effort default (no --effort flag) · thinking on) on Bill a clinic's visits with bundled codes, modifiers, a multiple-procedure discount and a sliding fee scale

AClaude Sonnet 5.5default · thinking on · Claude Code 2.1.299 (headless -p) · cloud · 2026-10-24 · by @bobsiopener

Trust 80%Fully autonomoussuccess · first tryCompare

Estimated cost: $0.06
Wall time: 14s
Human step-ins: 0
Outcome: Pass

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Exact prompt

# Bill a clinic's visits with bundling, modifiers, a multiple-procedure discount and a sliding fee scale Inputs: `visits.csv` (line_id, patient_id, date, code, units, modifier), `fee-schedule.json` (codes with fee and group, bundle pairs), `patients.csv` (patient_id, household_size, annual_income) and `sliding-scale.json`. All patients are synthetic test records; amounts are in dollars. `fee-schedule.json`, `sliding-scale.json` and these rules are the record; where `billing-note.txt` disagrees, the rules win. Rules: - A visit is one patient on one date. A line's full charge is fee × units; modifier 52 (reduced service) halves it. - Bundling: a line whose code is the child in a bundle pair is not billed (charge 0) when the same visit also has a line with the parent code, unless the child line has modifier 59. - Multiple-procedure discount: within a visit, billed lines whose code is in group procedure are ranked by full charge (after modifier 52), highest first, ties by the number in line_id; the first is charged 100% and every other one 50%. Each line's charge is rounded half-up to the cent. - Sliding scale: a patient's poverty-line percentage is annual_income / (base + per_person × (household_size − 1)) × 100. The discount is the pct of the first band whose max_pct is at least that percentage (max_pct null is the last band). It applies to each visit's gross (the sum of its line charges), rounded half-up to the cent; due = gross − discount. - Write `out/bill.json`: `{"lines": {"<line_id>": <charge>, ...}, "visits": {"<patient_id>|<date>": {"gross": <dollars>, "discount": <dollars>, "due": <dollars>}, ...}, "patients": {"<patient_id>": <sum of due>, ...}}`. ## How this run works - Work on your own: nobody will answer questions in this task, and writing to `ask/` counts against the run. - Write only under `out/`. Create `out/` if it is missing. Inputs are synthetic; don't fetch anything from the network. - Scoring is partial credit: each listed check is pass/fail, and the score is the share passed. Numbers are compared to within 0.005 unless the task says otherwise.

Bill a month of synthetic patient visits at a community clinic. Child codes are dropped when their parent is billed in the same visit unless modifier 59 is used, modifier 52 halves a line, units multiply the fee, procedures in a visit are ranked by charge for a 100/50 discount, and each patient's sliding-scale band comes from household income against a poverty line with incomes sitting exactly on the band limits. A billing note gets the bundling, ranking, units and band rules wrong. Original benchmark task written for usecaserank.com (not based on a specific public post). Headless, offline run on a reproducible fixture. Each run's notes say how its cost was measured (estimates are marked).

Success criteria: bundling line_charges procedure_discount sliding_scale patient_totals

Setup notes: Batch 34 case tq01-clinic-visit-billing (offline, synthetic inputs, seed 160814797). Autonomous case: no stand-in user and no step-ins expected; any file the solver wrote to ask/ is counted as a measured intervention (0) and blocks a pass. Prompt = TASK.md verbatim. Hidden key kept outside the solver's work dir. Scored with the case's scorer (python3 score.py WORKDIR KEYDIR, absolute paths); pass = every check true and no ask/ files. Tools: Read/Write/Edit/Glob/Grep/Bash, web disabled. Single run, no retries. 1-min load average at scoring 0.45 (8 cores). Time-zone results depend on the system time-zone database: tzdata 2026c-0+deb13u1 (Python zoneinfo). Claude Code's own reported cost for claude-sonnet-5.5: $0.062625. Score: 5/5. Cost is an ESTIMATE: measured tokens x pricing.json list price (Claude Pro subscription, nothing billed); input_tokens include cache reads and writes. Single run.

Estimated cost List-price estimate; not actually billed.

Metrics

Estimated cost: $0.06
Wall time: 14s
Human step-ins: 0
Turns: 4

Model usage
Model	Input tok	Output tok	Cost
AClaude Sonnet 5.5anthropic/claude-sonnet-5.5effort default (no --effort flag) · thinking on	81,026	1,750	$0.06

Reproduce this run

Use the use case prompt on the use case page.
Same setup: Claude Sonnet 5.5 (anthropic/claude-sonnet-5.5, effort default (no --effort flag) · thinking on) via Claude Code 2.1.299 (headless -p), cloud.
It counts as a success only if it meets every success criterion: bundling line_charges procedure_discount sliding_scale patient_totals
Log model, tokens, wall time, human step-ins and the evidence log, then submit it as a reproduction. A different model? Submit a head-to-head rerun.

How runs are scored: Methodology.

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Automated checks

Trust 80% comes from these checks (how Trust % works).

Run date is not in the future : passed
Model is in the dated pricing table : passed
Cost recomputed from tokens matches : passed
Cached tokens are consistent : passed
Output throughput is plausible : passed
Autonomy matches step-ins : passed
Step-ins do not exceed turns : passed
Retries agree with first-try result : passed
Evidence log SHA-256 matches : passed
Evidence log is substantial : passed

Evidence log

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  "permission_denials": [],
  "terminal_reason": "completed",
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  "subagent_stats": {
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  "result": "I wrote `out/bill.json` with every line charge, the per-visit gross, discount and due amounts, and the per-patient totals. I didn't check the figures against anything beyond the one check below.\n\nThe one check: PT-7139 and PT-7152 sit at exactly 200% of the poverty line. The rules put them in the 40% band, because the first band whose max is at least the percentage wins. `billing-note.txt` says 15%, but the rules take precedence, so I used 40%.\n\nI also followed the rules, not `billing-note.txt`, on three other points:\n- **Bundling:** child lines are not billed when the parent is on the same visit, unless the child has modifier 59.\n- **Multiple-procedure discount:** ranked by full charge, with ties broken by line number.\n- **Units:** applied to procedures too.\n\nAmounts due per patient:\n\n| Patient | Due |\n|---|---|\n| PT-7100 | $784.55 |\n| PT-7113 | $111.15 |\n| PT-7126 | $618.21 |\n| PT-7139 | $332.22 |\n| PT-7152 | $548.61 |",
  "ttft_ms": 1762,
  "type": "result",
  "duration_ms": 13016,
  "uuid": "[REDACTED]",
  "ttft_stream_ms": 940,
  "time_to_request_ms": 176,
  "first_content_frame_ms": 940,
  "queued_turn_count": 0,
  "result_index": 0
 }
]