Final answer:
The correct CPT code for a problem-focused history and examination with 10 minutes spent at bedside for a previously admitted patient is Level 4 (99224), as it aligns with subsequent hospital care for an established patient.
Step-by-step explanation:
The question appears to be pertaining to the medical coding of a hospital visit for an already admitted patient focused on billing and coding for healthcare services, specifically the Current Procedural Terminology (CPT) codes used for billing hospital visits.
Level 1 (99221) billing code is used for an initial hospital care service, which may not be appropriate for a follow-up visit. Level 2 (99222) and Level 3 (99223) are higher levels of initial hospital care which include more comprehensive history and examination, and complex medical decision-making. As we are dealing with a problem-focused history and examination, with a short visit of 10 minutes at bedside, this aligns more closely with the Level 4 (99224) CPT code. This code is used for the subsequent hospital care per day, for the evaluation and management of an established patient, which seems to most accurately reflect the described scenario.