Chapter 19 — Key Takeaways

The question these sections ask

Surgery asks what was done. These three ask what was done, WHO did which part, WHERE, and WITH WHOSE EQUIPMENT — and the last three are where the money and the errors are.

Professional, technical, global

NO WRITTEN REPORT, NO PROFESSIONAL COMPONENT. Third statement of this principle in Part III — Ch. 14 §14.7 (modifier 26), Ch. 17 §17.7 (20611's permanent recording and report), and every guidance code in §19.3. One sentence: no report, no service.

Ownership decides who bills TC, not location.

The FOURTH column

The PC/TC INDICATOR completes Chapter 14's promise:

(Plus co-surgery and assistant-at-surgery — Ch. 18 §18.10. Six columns, one free file.)

Appending 26 to a code with no professional component asserts a service that does not exist.

Radiology

Modality · body part · VIEWS · contrast.

"WITH CONTRAST" = INTRAVASCULAR, INTRA-ARTICULAR, or INTRATHECAL.

Oral or rectal contrast alone → coded WITHOUT contrast. And "without followed by with" is one code, not two.

Complete vs. limited ultrasound turns on whether a defined set of elements was imaged and documented. Missing one — including imaged-but-undocumented — makes it limited.

Radiation oncology is an EPISODE: planning → simulation → dosimetry → delivery → management per a defined number of fractions.

Nuclear medicine reports the radiopharmaceutical separately — a supply, Chapter 20's territory, the same structure as J1030 alongside 20610.

Imaging guidance

   1. NAMED in the procedure's descriptor?  → INCLUDED
   2. A separate code for the procedure WITH guidance?  → use that code
      (20610 vs 20611)
   3. Otherwise a standalone guidance code?  → separately reportable

Every guidance code requires permanent image recording AND a report.

Panels and pathology

THE PANEL RULE, BOTH DIRECTIONS

Report a panel ONLY if EVERY component was performed. Do NOT unbundle a panel you DID complete. Report the closest panel, then the extras individually. Never build a panel from components.

(Chapter 15 §15.6: a panel is one unique test for the MDM data element. Same fact — it counts once and it bills once.)

Surgical pathology's unit is the SPECIMEN — each separately identified, separately submitted. Count containers, not lesions.

Microbiology's unit changes at every step: culture per specimen · identification per isolate · susceptibility frequently per antibiotic.

Cytology is coded by the laboratory's screening method. Drug testing divides presumptive from definitive, and large uniform definitive panels on standing orders are a documented enforcement pattern — detectable from claims data alone.

Units are the largest source of laboratory error. Read the descriptor's last phrase: each · per specimen · each additional · per hour.

Ordering vs. performing

The entity that PERFORMED the test bills it. The ordering physician appears as the REFERRING PROVIDER — that is their entire role.

In the practice → the practice bills. Sent out → the reference laboratory bills; the practice bills the collection. Purchased → heavily regulated; modifier 90; read the rules directly.

The referring provider field is the highest-volume denial in diagnostic billing: blank · wrong person · not enrolled (not fixable by billing — Chapter 25 §25.7) · name/identifier mismatch. A front-end intake problem paid for at the back end.

Enforcement: billing tests you did not perform · payments tied to referrals (Stark is strict liability) · standing orders that outlive their reason.

CLIA

Every site performing laboratory testing on human specimens needs a certificate, and the certificate type determines which tests it may perform.

Waiver · Provider-Performed Microscopy · Compliance · Accreditation.

PPM requires: performed personally by the provider, during the encounter, on a specimen not easily transportable.

Modifier QW = a waived test from a waiver site.

A certificate that does not cover the test is a COMPLIANCE problem, not a billing one. Do not resubmit.

Repeats and units

Modifier 91 = a repeat to obtain SUBSEQUENT RESULTS. Not for equipment failure, a bad specimen, confirmation, or normal quality control. Not for codes whose descriptor already handles repetition through units.

   BEFORE SENDING A LAB LINE
   1. What is the UNIT?
   2. How many were PERFORMED?
   3. Do 1 and 2 match the claim?

The Medicine section

Residual — defined by what it is not. Cardiovascular STUDIES are here; cardiovascular SURGERY is in Surgery. 93000 global ECG · 93010 interpretation only — the same distinction as 26/TC, solved with two codes instead of a modifier.

The eye codes are a SECOND visit-code system, an alternative to Chapter 15's E/M codes, with a comprehensive examination defined by a list of elements — one of the last places a visit level turns on examined content.

Psychiatry codes on time increments. Allergy separates antigen preparation from injection — two lines that look redundant and are not. Pulmonary components bundle into comprehensive studies.

Injections and infusions

THE HIERARCHY OVERRIDES CHRONOLOGY.

CHEMOTHERAPY > THERAPEUTIC/PROPHYLACTIC/DIAGNOSTIC > HYDRATION and INFUSIONS > PUSHES > INJECTIONS

Initial — selected by hierarchy, generally one per encounter per access site. Sequential — a different substance, after, through the same access. Concurrent — at the same time.

Hydration first, chemotherapy last → the CHEMOTHERAPY is initial.

Start and stop times on the medication administration record are the source document for this entire subsection. Without them, an infusion is not an infusion and add-on units cannot be supported.

Immunizations

TWO CODES. THE PRODUCT AND THE ADMINISTRATION. EVERY TIME.

Reporting the product alone is a pure underpayment that never denies.

But an administration with no product is NOT automatically an error — a vaccine supplied free by a public program may not be billed. The correct code depends on which supply the dose came from, which is not in the medical record.

The counseling-based family (through age 18) requires counseling by the physician or QHP, documented, and counts differently.

Timed codes

Untimed → once per date. Timed → units, commonly 15 minutes, constant attendance.

   TOTAL ALL TIMED MINUTES FIRST, THEN CONVERT

      8 – 22 ...... 1        Under 8 total ...... 0 units
     23 – 37 ...... 2
     38 – 52 ...... 3
     53 – 67 ...... 4
     68 – 82 ...... 5

Converting each service separately and adding the units is the most common error. 8 + 8 minutes is 16 → 1 unit, not 2.

This is Medicare's methodology — verify by payer. Above the therapy threshold, the KX modifier attests to medical necessity — an assertion about a record, so appending it automatically is Chapter 14 §14.1's failure for the sixth time in Part III.

Key terms

professional / technical component · global service · PC/TC indicator · modality · views · with contrast · complete vs. limited study · treatment management · imaging guidance · organ or disease-oriented panel · surgical pathology levels · presumptive and definitive drug testing · ordering vs. performing · referring provider · reference laboratory · modifier 90 · purchased diagnostic test · CLIA · waived test · modifier QW · injection and infusion hierarchy · initial service · immunization administration · eye codes · timed code · substantial portion methodology · KX modifier

Monday morning

You should be able to:

• Ask who did which part, where, with whose equipment before coding a diagnostic service.
• Check the PC/TC indicator before appending 26 or TC.
• Say what "with contrast" means and correct the person who counts oral contrast.
• Apply the panel rule in both directions.
• Say who bills a reference laboratory test and who appears as referring provider.
• Read a medication administration record.
• Report both immunization codes.
• Total the timed minutes before converting.

The Encounter — the lab lines.

83036 and 80061 are on the reference laboratory's claim, not Northgate's — because the entity that performed the test bills it. Northgate collected and sent.

Northgate bills 36415 — the venipuncture. \$14.00 charged, \$3.00 allowed. The smallest line on the claim, and Northgate's entire revenue from two laboratory orders.

In house, three questions would arise: CLIA (does the certificate cover both tests?), the panel rule (80061 requires every component), and units. The decision is a business decision about volume — and a practice deciding it without knowing what the tests pay, what CLIA level they need, and what the panel rule means is deciding it on a brochure.

And 99000 is not on the claim either. Most payers include specimen handling in overhead; some contracts do not. A practice that has never asked is either correctly not billing something unpayable or not billing something payable — and waiting will never tell it which.