1. Compare and contrast the differences between ICD-10-CM and ICD-10-PCS coding systems in the context of inpatient hospital coding. How do these two coding systems complement each other in capturing comprehensive and accurate information about patient diagnoses and procedures during a hospital stay? Discuss the benefits and challenges of using ICD-10-CM and ICD-10-PCS in tandem for inpatient coding.

2. Inpatient hospital coding requires a deep understanding of clinical documentation, medical terminology, and coding guidelines. What are the critical skills and knowledge areas that an inpatient hospital coder should possess?