Adverse effect of anticoagulants, sequela

This code signifies a long-term or residual condition resulting from an adverse reaction to anticoagulant medication. These are typically chronic issues that persist after the acute adverse effect has resolved, such as permanent organ damage or chronic pain directly attributable to the anticoagulant.

Apply this code when documenting a patient's current condition that is a lasting consequence of a past adverse effect from an anticoagulant. Examples include chronic kidney disease due to anticoagulant-induced hemorrhage, or persistent neurological deficits following an anticoagulant-related intracranial bleed. This code is used for the sequela itself, not the acute adverse event.

• Always sequence this code after the code for the specific sequela (e.g., chronic kidney disease, cerebral infarction).
• An external cause code (e.g., Y44.2 for adverse effect of anticoagulants) should also be reported to indicate the drug involved.
• The 7th character "S" indicates sequela and is mandatory for this code.