Medical Documentation, Coding, and Administration
What this domain tests
This domain covers the record as a legal document and as a billing instrument: what must be documented, how corrections are made, how visit levels are supported, and how coding conventions and privacy rules apply. Questions often present a note and ask what is wrong with it or what may be billed.
Core rules
- Notes must be contemporaneous, accurate, attributable, and legible. Authentication identifies the author and date.
- Corrections are made with a single line through the error, the correct entry, and the date, time, and initials; the original must remain readable. Never obliterate, use correction fluid, or backdate. A late entry is written later, labeled as late, and dated when written.
- Avoid error-prone abbreviations, including U for units, QD and QOD, trailing zeros, and MS or MSO4; write units and concentrations in full.
- Evaluation and management level is supported by either medical decision making (number and complexity of problems, data reviewed, risk) or total time on the date of the encounter, depending on the code set and setting in force.
- ICD-10-CM conventions: outpatient encounters code confirmed diagnoses, not suspected ones; inpatient encounters may code conditions documented as probable or suspected. Use laterality, seventh characters for injuries, and sequelae codes for late effects. External cause codes add context but do not replace the nature-of-injury code.
- Medical necessity must be documented, not implied; the note should show why the service was needed.
- Privacy rules require the minimum necessary disclosure, patient authorization for non-treatment purposes, and audit trails.
- Upcoding, unbundling, and cloning notes are compliance violations, not documentation shortcuts.
Worked example
A note for a chronic obstructive pulmonary disease follow-up reads: patient feels better, continue current inhalers, no exam findings, no test results. A high-level visit is selected. Reasoning: the documented problem is one stable chronic illness, the data reviewed are none, and the risk is low, so medical decision making supports only a low level. The remedy is accurate documentation of what was actually done or correct code selection, never inflating the note to match the code.
Traps that cost marks
- Copying forward prior notes and leaving stale findings.
- Coding a rule-out diagnosis in the outpatient setting.
- Altering a record after an adverse event instead of adding an addendum.
- Documenting normal findings that were never obtained.