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 (Y83-Y84) ICD-10-CM
The Y83–Y84 section covers 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 with 21 ICD-10-CM diagnosis codes, of which 19 are billable in fiscal year 2026. The section is organized into the 2 code ranges listed below.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Code Ranges in This Section 2 ranges · 21 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the Y83–Y84 Code Range
ICD-10 codes Y83-Y84 cover complications and abnormal reactions stemming from surgical and medical procedures, where no misadventure or error at the time of the procedure is mentioned. These codes identify patient conditions caused by medical interventions that occur later on.
The codes Y83 and Y84 are used to classify situations where a patient experiences an unexpected negative response or complication after a surgery or medical treatment, without indicating that an accident or mistake happened during the procedure. This might include infections, reactions to anesthesia, or other adverse effects related to the intended medical intervention. Understanding these codes helps healthcare providers document and track complications originating from medical care itself, also referred to as procedure-related complications, which is crucial for accurate health records and patient safety monitoring.
Questions About This Page
How many codes are in the Y83-Y84 range?
The Y83-Y84 range contains 21 ICD-10-CM diagnosis codes in FY 2026. 19 of them are billable, and the rest are category headers that organize the section.
What conditions does Y83-Y84 cover?
The range covers 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. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
