What does the "Code first" note specify?

The "Code first" note in ICD-10-CM indicates the sequence and order in which diagnoses should be reported. Specifically, it suggests that when coding for certain conditions, you must first assign a code for the underlying disease before coding for any associated manifestations. This priority in coding reflects the importance of accurately capturing the most significant aspect of the patient's health condition.

Using this organizational structure ensures that healthcare data accurately portrays the complexity of patient illnesses, leading to better statistical tracking and more effective treatment planning. It underscores the hierarchical nature of certain diagnoses and emphasizes that some conditions stem from others, requiring the coder to prioritize the underlying cause in their reporting. Thus, understanding how to interpret and apply the "Code first" note is crucial for accurate coding practices and proper documentation in healthcare.