TheoryMedical Coding CCS
Practice Test
Practice for the Medical Coding CCS with realistic exam questions, full explanations, timed mock exams and progress tracking — fully offline.
Heads up: the app and the web exam use separate accounts — a web unlock and an in-app purchase do not carry over. Buy on the web to practice on the web.
Medical Coding CCS exam — full Q&A walkthrough
Every question read aloud with the answer explained. Play it on your commute, then test yourself.
30 free Medical Coding CCS questions
Sampled across every topic area — not just the first page. Try them as a quiz or flip them as flashcards.
-
CPT & Outpatient
CPT Category I codes consist of how many digits?
Correct — A. All CPT Category I codes are exactly 5 numeric digits. Category II and III codes also use 5-character alphanumeric formats but are distinct from Category I. -
CPT & Outpatient
Under the 2021 E/M guidelines for outpatient visits, the level of service for established patients is based primarily on which two elements?
Correct — C. Since 2021, outpatient E/M levels for established patients are determined by either medical decision making (MDM) or total time on the date of the encounter — not the three-component history/exam/MDM framework. -
CPT & Outpatient
Which CPT code range covers outpatient office or other outpatient visit services for new patients?
Correct — D. As of 2021, CPT codes 99202–99205 represent new patient outpatient office visits (99201 was deleted). The established patient codes are 99211–99215. -
CPT & Outpatient
A physician spends 45 minutes with an established outpatient patient on the date of service, with more than half that time spent on counseling. Under 2021 E/M guidelines, which code is most appropriate?
Correct — C. Under 2021 guidelines, CPT 99215 covers 40–54 minutes of total time for established patient office visits. Since 45 minutes falls in the 40–54 minute range, 99215 is appropriate. -
CPT & Outpatient
Which element of Medical Decision Making (MDM) reflects 'Prescription drug management' as its highest level of risk?
Correct — C. The MDM 'Risk' column addresses risk of complications, morbidity, or mortality. Prescription drug management is cited under the Moderate risk level within this column of the MDM table. -
CPT & Outpatient
Under MDM, a patient presents with a new presenting problem requiring additional workup, and the physician reviews external records. This scenario most likely maps to which level of MDM?
Correct — B. A new presenting problem requiring workup falls under the 'Moderate' complexity level in the number/complexity of problems column, and reviewing external records can also support Moderate in the data column, making Moderate the appropriate MDM level. -
CPT & Outpatient
The global surgical package for a major procedure typically includes post-operative care for how many days?
Correct — A. Major surgical procedures carry a 90-day global period that includes pre-op care one day before surgery, the day of surgery, and 90 post-operative days. Minor procedures typically have a 0- or 10-day global period. -
CPT & Outpatient
Which modifier is used to indicate that a procedure was performed on the left side of the body?
Correct — D. Modifier -LT (Left side) is the HCPCS Level II modifier used to identify procedures performed on the left side of the body. Modifier -RT is used for the right side. -
CPT & Outpatient
A surgeon performs two separate procedures on the same day through the same incision. Which modifier is most appropriate for the secondary procedure?
Correct — B. Modifier -51 (Multiple procedures) is appended to the secondary procedure when multiple procedures are performed at the same session to indicate they are not bundled and allows for appropriate reimbursement adjustment. -
CPT & Outpatient
Modifier -22 is used when:
Correct — C. Modifier -22 (Increased procedural services) indicates the work required was substantially greater than usual due to unusual complexity, and supports a request for additional reimbursement with documentation. -
CPT & Outpatient
A coder is assigning a code for excision of a benign lesion on the back measuring 1.8 cm, with margins, the total excised diameter is 2.5 cm. Which measurement is used to select the CPT code?
Correct — A. For excision of benign or malignant lesions, the code is selected based on the greatest single measured diameter of the lesion plus the narrowest margins required, i.e., the total excised diameter including margins. -
CPT & Outpatient
Simple wound repairs in CPT are classified by which primary factor?
Correct — B. Wound repair codes are assigned based on the length of the repair (measured in centimeters) and the anatomical location (body site), with complexity (simple, intermediate, complex) also factored in. -
CPT & Outpatient
When multiple simple repairs are performed on the same body site classification on the same day, how should they be coded?
Correct — D. Per CPT guidelines, when multiple simple repairs are performed on wounds in the same body site classification and same complexity, the lengths are added together and reported as a single code for the total combined length. -
CPT & Outpatient
A patient has two wounds repaired: a 3 cm simple repair on the scalp and a 2 cm simple repair on the face. How should these be coded?
Correct — A. Scalp and face are different body site classifications in CPT wound repair coding. Only wounds in the same body site classification and same complexity are added together; wounds in different classifications are coded separately. -
CPT & Outpatient
In CPT, radiology services can be billed using which billing components?
Correct — C. Radiology services may be billed as a global service (both professional and technical), the professional component only (modifier -26), or the technical component only (modifier -TC). -
CPT & Outpatient
Modifier -26 appended to a radiology code indicates:
Correct — B. Modifier -26 identifies the professional component of a radiology service — the physician's work of interpreting and reporting the study. The technical component covers equipment, staff, and supplies. -
CPT & Outpatient
A radiologist interprets an MRI of the brain with and without contrast. Which CPT code family would be used?
Correct — D. CPT 70553 is the code for MRI of the brain with and without contrast. 70551 is without contrast, 70552 is with contrast only, and 70553 captures the complete with-and-without contrast study. -
CPT & Outpatient
CPT codes for pathology and laboratory services are found in which section of the CPT codebook?
Correct — A. Pathology and Laboratory CPT codes are in the 80000–89999 range. Radiology is 70000–79999, and Medicine services are 90000–99999. -
CPT & Outpatient
A complete blood count (CBC) with automated differential is reported with which CPT code?
Correct — A. CPT 85025 describes a complete blood count (CBC) with automated differential white blood cell count. 85027 is a CBC without differential, 85022 is a manual count, and 85031 is a manual CBC. -
CPT & Outpatient
A physician orders a comprehensive metabolic panel (CMP) and a lipid panel. Under the organ- or disease-oriented panels rule, which best describes how to code this?
Correct — B. When panels are ordered as such and all components are performed, each panel is coded individually. The CMP is 80053 and the lipid panel is 80061; both may be reported separately because they are distinct panels. -
CPT & Outpatient
Immunization administration codes in CPT are reported:
Correct — D. CPT requires separate coding for both the vaccine/toxoid product (e.g., 90686) and the immunization administration service (e.g., 90471). Both codes are reported together. -
CPT & Outpatient
Which CPT code is used to report initial psychiatric diagnostic evaluation (not including medical services)?
Correct — A. CPT 90791 is the psychiatric diagnostic evaluation without medical services. 90792 adds medical services (prescribing, etc.). 90832 and 90837 are psychotherapy time-based codes. -
CPT & Outpatient
A physician performs an E/M service and separately performs 45 minutes of individual psychotherapy with the same patient on the same day. How should this be coded?
Correct — C. When an E/M service is performed on the same day as psychotherapy by the same physician, the add-on psychotherapy codes (90833, 90836, 90838) are appended to the E/M code to report the additional psychotherapy time. -
CPT & Outpatient
Anesthesia services in CPT are reported based on which two primary units?
Correct — B. Anesthesia billing uses a formula: (Base Units + Time Units + Modifying Units) × Conversion Factor. Base units are assigned to each anesthesia code and time units reflect the duration of the service. -
CPT & Outpatient
Which modifier indicates that anesthesia services were personally performed by an anesthesiologist (not medically directed)?
Correct — D. Modifier -AA indicates anesthesia services were personally performed by an anesthesiologist. -QK is for medical direction of two to four CRNAs, and -QZ is for a CRNA without medical direction. -
CPT & Outpatient
A patient undergoing a laparoscopic cholecystectomy has a documented history of severe systemic disease. Which physical status modifier should be appended to the anesthesia code?
Correct — A. ASA physical status P3 is for a patient with severe systemic disease. P2 is mild systemic disease, P4 is severe disease that is a constant threat to life, and P5 is a moribund patient. -
CPT & Outpatient
Modifier -25 is used to indicate:
Correct — C. Modifier -25 is appended to an E/M code to indicate that a significant, separately identifiable evaluation and management service was provided on the same day as a procedure or other service. -
CPT & Outpatient
Which modifier is used when a procedure or service was reduced or eliminated at the physician's discretion?
Correct — B. Modifier -52 (Reduced services) indicates that a service or procedure is partially reduced or eliminated at the physician's discretion. Modifier -53 is used when the procedure is discontinued after the patient has been prepared or placed on the table. -
CPT & Outpatient
Modifier -59 is used to identify a distinct procedural service. CMS created X modifiers as subsets of -59. Which X modifier indicates a different session?
Correct — D. Modifier -XE (Separate Encounter) is used when a procedure is performed at a different session or encounter on the same day, which is a subset use of the broader -59 modifier. -
CPT & Outpatient
Outpatient hospital facility services are reimbursed by Medicare under which payment system?
Correct — A. Medicare reimburses outpatient hospital services under the Outpatient Prospective Payment System (OPPS), which groups services into Ambulatory Payment Classifications (APCs). DRGs are used for inpatient services.
Medical Coding CCS sample questions
Tap any question below to reveal the answer and a plain-English explanation.
CPT & Outpatient Condition code 44 is used in outpatient hospital billing to indicate:
A. The patient was transferred from an inpatient admission
B. A Medicare Advantage patient
C. A change in patient status from inpatient to outpatient ✓
D. An observation stay converting to inpatient
Correct — C. Condition code 44 is used on a UB-04 claim when an inpatient admission is changed to outpatient on the same day. The hospital must obtain physician concurrence and the attending physician must agree.
ICD-10-CM Diagnosis ICD-10-CM codes may contain up to how many characters?
A. 5
B. 6
C. 7 ✓
D. 8
Correct — C. ICD-10-CM codes are 3–7 characters long. The maximum length is 7 alphanumeric characters. Codes beyond 3 characters always have a decimal point after the third character.
ICD-10-PCS Procedures How many characters are in every ICD-10-PCS code?
A. 5
B. 7 ✓
C. 8
D. 10
Correct — B. Every ICD-10-PCS code has exactly 7 alphanumeric characters, each representing a specific value within its axis of classification.
MS-DRG Assignment In the MS-DRG system, what is the primary factor that determines the Major Diagnostic Category (MDC) assignment?
A. The principal diagnosis ✓
B. The principal procedure
C. The patient's age
D. The presence of a complication or comorbidity
Correct — A. MDC assignment is driven primarily by the principal diagnosis — the condition established after study to be chiefly responsible for the admission. Most MDCs correspond to a body system or disease etiology, and the principal diagnosis ICD-10-CM code maps the case to an MDC.
Sequencing & POA According to UHDDS guidelines, which of the following best defines the principal diagnosis?
A. The condition that caused the patient to seek outpatient care
B. The most resource-intensive condition treated during the stay
C. The condition established after study to be chiefly responsible for occasioning the admission ✓
D. The first condition listed on the physician's H&P
Correct — C. The UHDDS definition states the principal diagnosis is the condition established after study to be chiefly responsible for occasioning the admission to the hospital. It is determined after workup, not necessarily the admitting diagnosis.
Official Coding Guidelines Which publication provides the official guidelines for ICD-10-CM coding?
A. ICD-10-CM Official Guidelines for Coding and Reporting, published by CMS and NCHS ✓
B. AHA Coding Clinic for ICD-10-CM/PCS
C. CPT Assistant published by the AMA
D. UHDDS Data Dictionary published by AHIMA
Correct — A. The ICD-10-CM Official Guidelines for Coding and Reporting, published jointly by CMS and NCHS, provide the official coding rules and conventions. AHA Coding Clinic provides guidance but is secondary to the official guidelines.
Regulatory & Compliance Under HIPAA Privacy Rule, a covered entity must provide patients with a Notice of Privacy Practices (NPP) no later than:
A. 30 days after the first service delivery
B. 60 days after the first service delivery
C. The date of first service delivery ✓
D. 90 days after enrollment
Correct — C. HIPAA requires covered entities to provide the NPP to patients no later than the date of first service delivery (for direct treatment relationships). This ensures patients are informed of their privacy rights from the start of care.
Data Quality In ICD-10-CM, the term 'Excludes1' in a tabular list entry means:
A. The excluded code should never be reported with the code at that entry, because the two conditions cannot occur together ✓
B. The excluded code may be reported together with the code at that entry when both conditions are present
C. The excluded code has been replaced by the code at that entry
D. The excluded code represents a complication of the condition at that entry
Correct — A. An Excludes1 note in ICD-10-CM indicates a pure exclusion—the excluded condition and the code at that entry are mutually exclusive and cannot be coded together. This differs from Excludes2, which indicates the excluded condition is not part of the indexed condition but may coexist and be coded together.
About the Medical Coding CCS test
The Medical Coding CCS measures the Nursing/Medical knowledge you'll actually rely on — tested the way the real exam asks it, not with trick questions. Practising real Medical Coding CCS-style questions, then sitting a full timed mock exam, is the fastest way to walk in knowing you'll pass.
You will be tested on
- Safe and effective care environment
- Health promotion and maintenance
- Psychosocial and physiological integrity
- Pharmacology, infection control and patient safety
How TheoryPractice helps you pass
- Real exam-style questions with instant, detailed explanations
- Full timed mock exams that mirror the real test format
- Flashcards & quiz modes from the same question bank
- Progress tracking so you know exactly when you're ready
Topics in this question bank
Safe and effective care environment
Health promotion and maintenance
Psychosocial and physiological integrity
Pharmacology, infection control and patient safety
Full Medical Coding CCS bank + unlimited mocks
Try 30 questions free. Unlock the complete Medical Coding CCS question bank, every explanation, and unlimited timed mock exams. Practice on any device.
Unlock Medical Coding CCS →