Subluxation of C4/C5 cervical vertebrae, sequela

This code signifies a long-term consequence or late effect resulting from a previous subluxation of the cervical vertebrae at the C4-C5 level. It indicates that the patient is experiencing residual symptoms or complications directly attributable to that past injury, rather than an acute or current subluxation.

Apply this code when documentation clearly states a patient is presenting with chronic pain, neurological deficits, or other persistent issues that are a direct result of a previously diagnosed C4/C5 subluxation. The patient's medical record should specify that the current condition is a "sequela," "late effect," or "due to prior injury" of the C4/C5 subluxation.

• Always sequence the code for the specific sequela (e.g., chronic pain, myelopathy) first, followed by this sequela code.
• Ensure documentation explicitly links the current condition to the past C4/C5 subluxation; avoid using for acute or current subluxations.
• Distinguish carefully from codes for current subluxations (e.g., S13.150A, S13.150D) which indicate active treatment or healing phases.