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ICD-10-CM tabular list

Y83-Y84Surgical and other medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

ICD-10-CM codes Y83-Y84 cover surgical and other medical procedures as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure, within external causes of morbidity. The block holds 21 codes across 2 categories, of which 19 are billable and 2 are header codes that cannot be submitted on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • misadventures to patients during surgical and medical care, classifiable to (Y62-Y69)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • breakdown or malfunctioning of medical device (after implantation) (during procedure) (ongoing use) (Y70-Y82)

What else to watch in Y83-Y84

  • 1 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.

Categories in Y83-Y84

ICD-10-CMFY2026-Apr· effective April 1, 2026