Which coding system is predominantly used for reporting inpatient diagnoses?

• A. Current Procedural Terminology (CPT)
• B. International Classification of Diseases, 10th Revision (ICD-10)
• C. Healthcare Common Procedure Coding System (HCPCS)
• D. Diagnostic and Statistical Manual of Mental Disorders (DSM-5)

Answer: (B)

The International Classification of Diseases, 10th Revision (ICD-10) is the coding system predominantly used for reporting inpatient diagnoses. This is because ICD-10 provides a comprehensive and standardized method for documenting the health conditions and diseases diagnosed in a patient. It ensures consistency in reporting across various healthcare settings, which is essential for statistical data collection, billing purposes, and maintaining health records.

ICD-10 encompasses a wide range of codes that facilitate detailed descriptions of patient diagnoses, including specific conditions, complications, and comorbidities. This granularity is crucial for accurately reflecting patient populations, healthcare trends, and for planning healthcare services. Its widespread adoption by hospitals and healthcare providers is a key factor in its central role in inpatient diagnosis reporting.

Other coding systems like CPT focus primarily on reporting medical procedures and services, not diagnoses. The Healthcare Common Procedure Coding System (HCPCS) also primarily serves to report services and supplies rather than inpatient diagnoses. The DSM-5, although vital in the context of mental health, is intended for classifying mental disorders rather than for general inpatient diagnosis reporting. Therefore, ICD-10 is the clear choice for reporting inpatient diagnoses due to its specificity and broader application in healthcare settings.