Underdosing of vitamins, sequela

This code indicates a long-term or residual effect resulting from a past period of insufficient vitamin intake or administration. It signifies that the underdosing event itself is no longer active, but its lasting consequences are currently being addressed.

Apply this code when documenting conditions or symptoms that are a direct and lasting consequence of a previously resolved vitamin underdosing. This is appropriate for follow-up encounters where the patient is being treated for chronic issues stemming from the past underdosing, such as neuropathy from chronic B12 deficiency or osteomalacia from prolonged vitamin D deficiency.

• Always sequence this code after the code(s) for the specific sequela being treated.
• Do not use this code for active underdosing; refer to the acute underdosing codes for current events.
• Ensure documentation clearly links the current condition to a past vitamin underdosing event.