Enough abstractions. Let me walk one patient through the whole system — using every layer of the map we’ve built this month.
Meet Maria, 68, retired teacher, diabetes, and a knee that’s been getting worse for two years. Fictional — but everything that happens to her happens every day.
The PCP. Maria’s primary-care doctor examines the knee, orders an X-ray, and decides it’s time for an orthopedist. The PCP sends an in-network referral inside their health system, so it lands in the shared EHR instead of a fax machine.
The specialist. Three weeks later — the wait — the orthopedist confirms: bone on bone, she needs a knee replacement. The surgeon’s office submits a prior auth to Maria’s MA plan. Nine days. Approved.
The surgery. The replacement happens at an ASC — cheaper than the hospital, home the same day. The anesthesia team puts her under. The surgical techs assist.
The coded bill. The whole encounter becomes CPT and ICD-10 codes, rides a clearinghouse to the plan, gets adjudicated. Maria’s deductible is met; coinsurance covers her share. The EOB arrives weeks later.
Recovery. Home health nurses check the wound. A PT gets her walking again. Her PCP gets the operative note — twelve pages in the inbox — and, if the loop actually closes, adjusts her diabetes meds around the recovery.
The bill. Two months later: the hospital’s bill, the surgeon’s bill, the anesthesia bill, the PT bills. Four envelopes, four portals, one confused patient.
Now replay Maria’s story with one change: her PCP is at an independent clinic, out in the frontier. The referral goes by fax. The prior auth stalls. The operative note never reaches the PCP. Same medicine — completely different journey. That’s the difference between the fortress and the frontier, and it’s the whole reason this map exists.
The full September map: the cast, the people, the money trail, the insurance card, the life of a bill, why it costs so much.