When coding a sequela, which code is sequenced first?

In the case of coding a sequela, the sequela code is sequenced first because it represents the aftereffect or condition that arises as a result of the initial injury or illness. The purpose of coding sequelae is to capture the long-term effects of a previous condition, and following the guidelines, the code that directly relates to this ongoing issue must be prioritized in the coding hierarchy.

Coding guidelines specify that sequela codes are intended to illustrate the lasting impact of the initial event, thus positioning them as the primary concern in the patient's current medical narrative. By placing the sequela code first, it emphasizes the relevance and necessity of tracking the long-term outcomes of the original condition for accurate clinical documentation and reimbursement purposes. This approach enhances clarity and ensures that healthcare providers can effectively address and manage the lasting effects of past medical events in patient care.