In coding of sequela, which code should be sequenced first?

When coding sequela, the general guideline is to sequence the underlying cause of the sequela first. This means that the code representing the original condition or injury that led to the sequela should be prioritized in the coding sequence. The reason for this is that the sequela is an effect or consequence of the underlying condition, and it is important for the medical record to reflect the primary cause of the patient's current condition.

Sequencing the underlying cause first provides clarity in the patient's medical history and treatment, ensuring that healthcare professionals understand the relationship between the two. It establishes the context for the sequela, demonstrating that the subsequent issues are a direct result of the initial diagnosis or condition.

Following the underlying cause, the sequela code can then be listed, capturing the effects and manifestations that arise from that initial condition. This method not only follows coding conventions but also supports more accurate and comprehensive patient records, which can be crucial for treatment planning and insurance reimbursement.