2027 ICD-10-CM Diagnosis Code Y84Other 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›V01–Y99›Y83-Y84›Y84

ICD-10-CM Y84
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Y84 is a non-billable ICD-10-CM category code for 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, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Y84.0, Y84.1, Y84.2, and Y84.3.

Code Identity

ICD-10-CM Code
Y84
Billable Status
No — Non-Billable Category
Code Describes
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
Short Description
Oth medical procedures cause abn react/compl, w/o misadvnt
Chapter
Y83-Y84
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

Code Classification

ChapterV01–Y99External causes of morbidity and mortality
SectionY83-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
CategoryY84Other 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
This CodeY84Other 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

Specific Coding for Oth medical procedures cause abn react/compl, w/o misadvntOverview

Non-specific codes like Y84 require more characters. Use one of these billable codes instead:

  • Use Y84.0 for Cardiac catheterization as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

  • Use Y84.1 for Kidney dialysis as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

  • Use Y84.2 for Radiological procedure and radiotherapy as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

  • Use Y84.3 for Shock therapy as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

  • Use Y84.4 for Aspiration of fluid as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

  • Use Y84.5 for Insertion of gastric or duodenal sound as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

  • Use Y84.6 for Urinary catheterization as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

  • Use Y84.7 for Blood-sampling as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

  • Use Y84.8 for 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

  • Use Y84.9 for Medical procedure, unspecified as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Y84: its own notes plus those printed at block Y62-Y84, block Y83-Y84, and Chapter 20. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block Y62-Y84 Complications of medical and surgical care applies to 115 codes
  • complications of medical devices
  • surgical and 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

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block Y83-Y84 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 applies to 19 codes
  • misadventures to patients during surgical and medical care, classifiable to (Y62-Y69)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block Y83-Y84 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 applies to 19 codes
  • breakdown or malfunctioning of medical device (after implantation) (during procedure) (ongoing use) (Y70-Y82)

Notes

General instructions on how these codes are used.

From Chapter 20 (V00-Y99) External causes of morbidity and mortality applies to 7,461 codes
  • This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Y84, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming Y84: they are not reported together with it, unless the two conditions are unrelated.

  • Block Y62-Y69 Misadventures to patients during surgical and medical care
    surgical and medical procedures as the cause of abnormal reaction of the patient, without mention of misadventure at the time of the procedure (Y83-Y84) names Y83-Y84, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming Y84: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block Y70-Y82 Medical devices associated with adverse incidents in diagnostic and therapeutic use
    later complications following use of medical devices without breakdown or malfunctioning of device (Y83-Y84) names Y83-Y84, which includes this code
  • Block Y70-Y82 Medical devices associated with adverse incidents in diagnostic and therapeutic use
    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) names Y83-Y84, which includes this code

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Y84Overview

Is Y84 a billable code?

No. This is a category header that groups the codes for 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, and headers cannot be submitted on claims. Claims for 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 need a more specific code from this category, such as Y84.0, Y84.1, and Y84.2.