CCS Study Guide 2026

When documentation is conflicting or ambiguous, the coder should query the attending physician (who is responsible for the patient's care) for clarification before assigning codes.

Medicare is the federal government program that provides healthcare coverage primarily for individuals aged 65 and older. It also covers certain younger people with disabilities and those with End-Stage Renal Disease. Medicare helps cover hospital stays, doctor visits, and prescription drugs, playing a crucial role in the U.S. healthcare system.

A collision occurs when two different keys produce the same hash index, requiring a resolution strategy like chaining or open addressing.

A balanced BST halves the search space at each step, yielding O(log n) search time.

CRUD represents the four basic database operations: Create, Read, Update, and Delete, which cover all fundamental data manipulation tasks.

A query retrieves, filters, or aggregates data from a database based on specified criteria.