Chapter 35 — Key Takeaways

The claim

There is no separate code set for a specialty. Same three books, same Official Guidelines, same NCCI edits, same modifiers. Five things differ:

Row 2 is the dangerous one. Every other row produces a wrong code on one claim. The payment convention produces a wrong shape on every claim, for months, before anything denies.

The five-question intake, in writing, before you code: source document · what's bundled into what · unit of payment · which policies govern · which twenty codes are the volume and which twenty are the dollars.

The six specialties, one line each

The rules that decide claims

Cardiology. What decides among the ECG codes is who owned the machine and who wrote the report — a business fact, not a clinical one. "Interpretation and report" means a separate, retrievable, signed document; a number on the tracing is not one. 93458 already includes catheter placement, injections, and imaging supervision and interpretation (Ch. 18 §18.4).

Orthopedics. The fracture-care fork is decided by who is providing definitive care through healing, as documented in the plan — not by payment, not by setting. Inside a 090-day global:

   24  unrelated E/M                        58  planned/staged → RESTARTS the global
   79  unrelated procedure                  78  unplanned, related → does NOT restart

Cast application included when fracture care is reported; the supply is still separately reportable (Ch. 17 §17.8).

OB/GYN. Outside the package: unrelated problem visits · documented complications (a provider's word) · laboratory beyond routine urinalysis · ultrasounds, amniocentesis, non-stress tests · visits beyond the routine schedule. The control is the episode log — visit count kept at the visit, eligibility re-verified on a schedule, outside services flagged the day they happen.

Pediatrics. Preventive codes are selected by age + new/established, never by MDM or time. Medicare does not cover a routine physical — the annual wellness visit uses G-codes (G0439 subsequent). Every immunization is two codes. Administration without a product may be correct (public supply). 99495 / 99496: contact within 2 business days, face-to-face within 14 / 7 days, medication reconciliation; the visit is part of the service.

Emergency medicine. No new/established, no time option (Ch. 16 §16.6). No national facility leveling criteria exist. A defensible criteria set is written · resource-based · reproducible · auditable · produces an explainable distribution — plus the scored record kept. A facility level that mirrors the physician's on every claim is itself a finding.

Anesthesia. Source document = the anesthesia record. One anesthetic → one code (highest base units). Anesthesia time is neither room time nor surgical time. Physical status is assigned by the anesthesia professional and never adjusted by a coder. The provider-arrangement modifier depends on the day's schedule, and medical direction is an audited checklist.

The four time conventions

   [1] E/M TOTAL TIME on the date       Ch.15 §15.8   → total time + content
   [2] TIMED THERAPY (8-minute rule)    Ch.19 §19.11  → minutes per service; TOTAL FIRST
   [3] PSYCHOTHERAPY time               §35.8         → start/stop or duration + content
   [4] ANESTHESIA time                  §35.7         → clock times on the record

8 + 8 minutes is 1 unit, not 2. Each convention is a plausible-sounding answer in the other three's territory. Document the duration and what happened in it — and never let a template supply the number.

Telehealth

A modality, not a specialty — and the least stable material in this book. POS 02 = telehealth other than in the patient's home · POS 10 = telehealth in the patient's home · modifier 95 asserts synchronous real-time audio and video. Payers combine the field and the modifier differently, and the field moves money (Ch. 23 §23.5). Never state a current coverage rule as permanent. Know where the list lives, not what it currently says.

The update cycle

ICD-10-CM October 1 · CPT January 1 · HCPCS Level II quarterly · NCCI and MUEs quarterly · payer policy continuously. In a specialty it arrives in lumps: the year your section is restructured, every reference older than the change becomes actively wrong rather than merely stale.

Two weeks, honestly

Before day 1: the current code book's section guidelines, read cover to cover · the NCCI Policy Manual chapter for that section · the LCDs and medical policies for the top services · the specialty society's coding resources (useful, and not the rule — the payer's policy governs the claim).

Week 1: top-twenty lists from the practice's own claims history, by volume and by dollars · a six-column grid per code (descriptor in your words · what's bundled · global · components · edits · governing policy) · the source document's layout · four half-days shadowing, asking "what do you wish the coder knew?"

Week 2: code in parallel and compare after, never during · read ninety days of the specialty's denials by CARC and root cause (the highest-yield hour) · start an error log and keep it a month.

What it does not buy: the tail, the clinical fluency, the authority to guess, or the credential.

Monday morning

You should be able to: pick the right electrocardiogram code from the ownership facts and defend it; read a catheterization report and report one code; find the fracture-care decision in the plan and name what still has to be queried; tell an obstetric coordinator what a transferred-in patient's claim needs and when; build a pediatric well-visit claim with its vaccine pair and a defensible modifier 25; score an ED chart against a written criteria sheet and say what it does and does not tell you about the physician's level; compute anesthesia units from an anesthesia record without using room time; name which of four time conventions applies to a code in front of you; report a telehealth claim after looking up the payer's current rule instead of remembering last year's; and start in a specialty you have never coded on Monday with a written plan and an honest account of what you do not yet know.