Free CCS-P Exam Flashcards

In the physician-office/outpatient setting, ICD-10-CM guidelines use "first-listed diagnosis" instead of "principal diagnosis." List first the condition, problem, or reason for the encounter chiefly responsible for the services provided that visit; ICD-10-CM conventions and chapter-specific guidelines take precedence over this general outpatient rule.

Outpatient/physician-based coding (Section IV.H): never code a diagnosis documented as "probable," "suspected," "rule out," or similar — code only to the highest degree of certainty (signs, symptoms, abnormal findings). Inpatient coding (Section II.H) does the opposite: code the uncertain condition as if confirmed. Applying the inpatient rule to a physician office visit is a common CCS-P error.

Means the excluded code can never be reported with the code above the note — the two conditions cannot occur together (e.g., a congenital vs. acquired form of the same condition). Exception: when the two conditions are truly unrelated to each other, both may be reported even under an Excludes1 note.

Means the excluded condition is not part of the condition represented by the code, but a patient can have both at the same time. Unlike Excludes1, it is acceptable to report both the code and the excluded code together when the documentation supports it.

A single ICD-10-CM code that classifies two diagnoses, a diagnosis with an associated manifestation, or a diagnosis with an associated complication. Assign only the combination code when it fully identifies the documented elements — do not add a second code for a component already captured, unless the combination code lacks needed specificity.

Use the unspecified-side code only when the record does not identify the side and clarification cannot be obtained; guidelines say it should rarely be used. If no bilateral code exists, code left and right separately. When each side is treated at a separate encounter, report the bilateral code for the first encounter, then the unilateral code for the remaining side once the first side no longer has the condition (e.g., staged cataract surgery).

Code assignment is normally based on the patient's provider: the physician or QHP legally accountable for the diagnosis. Other clinicians may document a listed set of exceptions: BMI, depth of non-pressure chronic ulcers, pressure ulcer stage, coma scale, NIHSS, Chapter 21 SDOH, laterality, blood alcohol level, underimmunization status, and firearm injury intent. The associated diagnosis (such as obesity, pressure ulcer, or acute stroke) must still be documented by the provider.

Some conditions require two codes: the underlying etiology coded first, then the manifestation. "Code first" and "use additional code" notes identify the required sequence; "in diseases classified elsewhere" in a code title signals that code can never be sequenced first. Sequencing errors here are a classic CCS-P trap.

Chronic conditions treated on an ongoing basis may be coded and reported as many times as the patient receives treatment and care for that condition — not just at the first encounter where it was diagnosed.

For outpatient encounters, code all documented conditions that coexist at the time of the encounter and require or affect patient care, treatment, or management. Do not code a condition that was previously treated and no longer exists, unless it affects current care (for example, through a history Z code).

A sequela is the residual effect after the acute phase of an illness or injury has ended. Coding generally requires two parts: the residual condition coded first, then the sequela code itself (often a 7th-character "S" injury code) — unless the Tabular List instructs a different sequence.

Once the provider confirms a definitive diagnosis, do not add codes for signs and symptoms routinely associated with that disease process, unless the classification instructs otherwise. Do code additional signs or symptoms that are not routinely part of the condition when they are present (Section I.B.5–I.B.6).

Z codes report encounter reasons or health-status factors that are not a current illness or injury: screening, aftercare, vaccination, status, and personal or family history. Depending on the encounter, a Z code can be first-listed or secondary. Some may only be first-listed (for example, Z00 general examination without complaint). Others are reported only as secondary codes (for example, BMI, Z68). Check the Tabular notes and Section I.C.21.

Effective January 1, 2021, CPT replaced history- and exam-based leveling for office/outpatient E/M codes (99202-99215) with two selection methods: medical decision making (MDM), or total time personally spent by the physician/QHP on the date of the encounter. History and exam are now performed as medically appropriate, not counted toward the code level.

Effective January 1, 2023, CPT applied the MDM-or-time leveling framework to most other E/M families: hospital inpatient and observation care, consultations, nursing facility, and home or residence services. History and exam are performed as medically appropriate. Emergency department codes 99281-99285 were also revised but are leveled by MDM only, because CPT says time is not a descriptive component of ED levels.

Medical decision making has four levels — straightforward, low, moderate, high — set by three MDM elements (problems addressed, data reviewed, risk). A given level requires meeting or exceeding that level in at least two of the three elements; the single highest-scoring element alone does not control the overall level.

Scores the problem(s) the clinician actually addresses at that encounter — not every problem in the patient's history. Categories range from a single self-limited/minor problem up through a chronic illness with severe exacerbation or an acute/chronic illness posing a threat to life or bodily function.

Scores data work across three categories: tests/documents ordered or reviewed and use of an independent historian; independent interpretation of a test performed by another clinician; and discussion of management or test interpretation with an external physician/QHP. Higher data levels require satisfying or combining more of these categories.

Scores the risk of the patient-management decisions made at that encounter, such as prescription drug management or a decision about minor or major surgery. It also counts decisions to start or forgo further testing, treatment, or hospitalization. It is based on the consequences of the problems addressed when appropriately treated, not on the abstract severity of the underlying disease.

When choosing an E/M code by time, use the total time the reporting physician/QHP personally spent on the date of the encounter. That includes face-to-face and non-face-to-face work that day, such as reviewing tests and documenting. Do not count clinical staff time, travel, time on other days, or time spent performing other separately reported services.

Appended to an E/M code to report a significant, separately identifiable E/M service by the same physician/QHP on the same day as a procedure or other service. The E/M work must go above and beyond the usual pre-/post-service work already bundled into that other service; a different diagnosis is not required to justify it.

Identifies a procedure or service that is distinct or independent from another non-E/M service on the same day when the two are not normally reported together. Documentation must support a different session, procedure or surgery, site or organ system, incision or excision, lesion, or injury. Modifier 59 is never appended to an E/M service; use modifier 25 for a separately identifiable E/M.

CMS describes these HCPCS modifiers as giving greater specificity where modifier 59 was previously used: XE (separate encounter on the same date), XS (separate organ or structure), XP (different practitioner), and XU (unusual non-overlapping service). Medicare instructs using them instead of 59 whenever possible; use 59 only when no more specific modifier applies.

Medicare global indicators are 000, 010, and 090. 000 covers endoscopies and some minor procedures (day of procedure only). 010 covers other minor procedures (the day of the procedure plus 10 days). 090 covers major procedures (the day before, the day of, and 90 days after; 92 days total). The package covers pre-op visits after the decision to operate, intraoperative work, complications not requiring a return to the OR, and routine post-op visits.

Appended to a procedure performed during the initial procedure's postoperative period when it was planned/staged, more extensive than the original, or therapeutic following a diagnostic procedure, by the same physician. It resets the global period — the new procedure starts its own global period.

Modifier 78: an unplanned return to the operating or procedure room by the same physician during the post-op period for a related procedure, such as treating a complication. Medicare pays only the intraoperative portion (000-day codes are paid in full) and no new global period starts. Modifier 79: an unrelated procedure by the same physician during the post-op period. It is paid under the normal rules and starts its own global period.

A PTP edit pairs a Column One and Column Two code that the same provider should not normally report for the same beneficiary on the same date. If both are billed, the Column One code is payable and the Column Two code is denied. Modifier indicator 0 means no NCCI-associated modifier can bypass the edit. Indicator 1 means an NCCI-associated modifier (such as 59 or an X{EPSU} modifier) may bypass it when documentation supports distinct services.

An MUE is the maximum units of service reported for a HCPCS/CPT code on the vast majority of appropriately reported claims by the same provider, for the same beneficiary, on the same date of service. Not every code has an MUE. MUEs catch unit and quantity errors; they are separate from PTP edits, which address code-pair bundling.

AHA Coding Clinic for ICD-10-CM/PCS is published under an agreement among the ICD-10-CM/PCS Cooperating Parties (AHA, AHIMA, CMS, and NCHS). It is the official source of ICD-10-CM/PCS coding advice. For CPT, the AMA's CPT codebook and CPT Assistant are the authoritative sources. Newsletters or commentary from individual experts are not official guidance, even when well researched.

An NCD is CMS's national Medicare coverage decision, and it binds every MAC. An LCD is a MAC's decision on whether an item or service is covered across that contractor's jurisdiction. MACs must keep LCDs consistent with NCDs and other national coverage, payment, and coding policy, so an NCD controls when both address the same service.

CAC software applies natural language processing, and increasingly machine learning, to clinical documentation to suggest codes. Its output is a starting point. The coding professional checks each suggestion against the documentation and official guidelines, accepts, edits, or rejects it, adds missed codes, and stays accountable for the final codes.

ICD-10-CM, CPT, and HCPCS are HIPAA code sets, and HIPAA requires following the ICD-10-CM Official Guidelines on standard claim transactions. Coverage and edit rules differ by payer. Medicare applies NCDs, LCDs, and Medicare NCCI. State Medicaid programs must use Medicaid NCCI methodologies (ACA Section 6507) plus state policy. Commercial plans follow their contracts and published policies. Identify the payer before applying coverage or modifier rules.

A compliant query cites the clinical indicators in the record and lets the provider answer freely. It can be open-ended, multiple-choice, or a limited yes/no question. Multiple-choice options must be clinically supported and include "other" or similar wording. A yes/no query may not be used to get a new diagnosis supported only by clinical indicators. Highlighting a desired answer, mentioning reimbursement, or re-sending a query until it gets the wanted answer is non-compliant.

OIG's physician-practice guidance lists seven elements: written policies/procedures, a compliance officer/contact, training and education, open communication lines, enforced disciplinary standards, auditing/monitoring, and prompt corrective action for detected problems. OIG frames this as a step-by-step goal, not a mandatory all-or-nothing requirement for every small practice.

Medicare accepts handwritten or electronic signatures. A stamped signature is not acceptable, except for an author with a documented disability under the Rehabilitation Act. A signature log can resolve an illegible signature. A missing signature can be resolved by an attestation signed and dated by the author, never by a colleague. An attestation cannot backdate a signature that a rule required before a given event.

Covered entities must make reasonable efforts to limit uses, disclosures, and requests of PHI to the minimum necessary, for example by sending a payer only the documentation needed for a claim. The standard does not apply to disclosures to, or requests by, a health care provider for treatment. Internal uses follow role-based access policies, which may let treating clinicians see the entire record.

Incident-to billing lets services by auxiliary personnel be billed under the supervising physician's NPI at 100% of the fee schedule, rather than the 85% paid when an NP or PA bills under their own NPI. Requirements: a non-institutional setting, a physician who performed the initial service and stays actively involved, and direct supervision. From 2026, direct supervision may be virtual (real-time audio-video) except for 010/090-global services; behavioral health allows general supervision.

The POS code generally shows where the face-to-face service occurred. It determines whether the Medicare Physician Fee Schedule pays the non-facility rate (for example, POS 11, office), which is typically higher, or the facility rate. Exception: for a registered hospital inpatient, report at least POS 21; for a registered outpatient, POS 19 or 22. This applies wherever the encounter took place and triggers the facility rate.

A provider gives an Original Medicare (fee-for-service) patient an ABN (Form CMS-R-131) before furnishing a usually covered Part B item or service it expects Medicare to deny, for example as not reasonable and necessary or as custodial care. If a required ABN isn't properly delivered, the patient is relieved of liability and the provider generally cannot collect. ABNs are not used for Medicare Advantage.

A prospective audit reviews claims before submission, catching and correcting errors before they're billed. A retrospective audit reviews claims after submission or payment, identifying patterns for education, recovery, or compliance reporting — both are tools a compliance program uses to satisfy its auditing/monitoring function.

Incident-to applies only in non-institutional settings such as offices. In facility settings like hospitals and SNFs, where incident-to is prohibited, a split (or shared) visit applies when a physician and an NPP in the same group both work on one E/M visit. Whoever performs the substantive portion bills it with modifier FS. Since 2024, the substantive portion is more than half the total time or a substantive part of the MDM.

GA reports that a signed ABN is on file for an item/service expected to be denied as not medically necessary — the patient can be billed if Medicare denies it. GZ reports the same expectation of denial but with no ABN on file — the claim is denied automatically and the patient cannot be billed for it.

Medicare Physician Fee Schedule payment = [(Work RVU × Work GPCI) + (PE RVU × PE GPCI) + (MP RVU × MP GPCI)] × conversion factor. Work reflects physician time and intensity, PE reflects overhead, staff, and supplies, and MP reflects liability insurance. Starting in CY 2026, CMS publishes two conversion factors: one for qualifying APM participants and one for all other clinicians.

When one surgeon performs multiple procedures on the same day with multiple-procedure indicator 2, Medicare ranks them by fee schedule amount. It pays 100% for the highest-valued procedure and 50% each for the second through fifth; a sixth or later procedure is priced by report. Report the major procedure without modifier 51 and the additional procedures with 51.

Every procedure/service line on a claim must be linked to a diagnosis code that supports its medical necessity for that specific service — not just any diagnosis documented at the encounter. A procedure billed against an unrelated or insufficiently specific diagnosis is a common cause of a medical-necessity denial.

HCCs group clinically related, cost-similar ICD-10-CM diagnoses for CMS's risk-adjustment payment models (for example, Medicare Advantage). Mapping a diagnosis to its HCC lets CMS predict a patient's expected cost and adjust payment to the health plan accordingly.

CMS-HCC is a prospective model: diagnoses from one calendar year's dates of service set the risk score for the following payment year. Each year starts fresh, so last year's HCCs do not carry forward. A chronic condition counts again only if it is documented, supported, and coded to full specificity from a qualifying encounter during that data year.

A Claim Adjustment Reason Code (CARC) states why a line was paid differently than billed, such as a denial or reduction reason. A Remittance Advice Remark Code (RARC) adds detail to that CARC or conveys general processing information — read both together to determine the real reason for a payment difference and the correct next action.

Denials generally fall into categories such as technical/clerical (fixable and resubmittable), eligibility/registration, missing authorization, medical necessity, and bundling (NCCI-related). Identifying the category correctly determines whether the fix is a simple resubmission, a corrected claim, or a formal appeal with supporting documentation.

Under ACA Section 6404, Medicare fee-for-service claims for services on or after January 1, 2010 must be filed within 12 months (1 calendar year) of the date of service. Late claims are denied as untimely unless a CMS exception applies, such as administrative error or retroactive entitlement. Other payers set their own deadlines, so check each payer's contract.