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Y84.5 ICD-10-CM Code: 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

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FY 2026 Apr update / External causes of morbidity (V00-Y99) / 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)

Y84.5

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

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

A complication or abnormal reaction that occurred after insertion of a tube into the stomach or small intestine for diagnostic or therapeutic purposes, not due to a mistake during the procedure itself.

CMS-HCC V28

0

0

RAF 0

CMS-HCC V24

0

0

RAF 0

ACA/HHS

0

0

RAF 0

ESRD/PACE

0

0

RAF 0

RXHCC

0

0

RAF 0

Code Trumping

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Code Book Path

Official
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
Y84.5Insertion 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

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for Y84.5 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for Y84.5 in this effective period.

Related Child Codes

Official
Y84.0Cardiac catheterization as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
Y84.1Kidney dialysis as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
Y84.2Radiological 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
Y84.3Shock therapy as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
Y84.4Aspiration 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

Includes

Official

ICD-10-CM does not list Includes notes for Y84.5 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for Y84.5 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for Y84.5 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for Y84.5 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for Y84.5 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Apply this code for complications from nasogastric or duodenal tube placement such as perforation, aspiration, or discomfort
Document the indication for the tube insertion and the specific complication that resulted

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is Y84.5 an HCC code?

No. Y84.5 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Y84.5 is the ICD-10-CM diagnosis code 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. A complication or abnormal reaction that occurred after insertion of a tube into the stomach or small intestine for diagnostic or therapeutic purposes, not due to a mistake during the procedure itself. Y84.5 sits in the ICD-10-CM chapter for external causes of morbidity (v00-y99), within the section covering 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).

Y84.5 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Apply this code for complications from nasogastric or duodenal tube placement such as perforation, aspiration, or discomfort.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Y84.5 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • •Apply this code for complications from nasogastric or duodenal tube placement such as perforation, aspiration, or discomfort
  • •Document the indication for the tube insertion and the specific complication that resulted

Child Codes

Y84.0Cardiac catheterization as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
Y84.1Kidney dialysis as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
Y84.2Radiological 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
Y84.3Shock therapy as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
Y84.4Aspiration 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
Y84.5Insertion 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
Y84.6Urinary catheterization as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
Y84.7Blood-sampling as the cause of abnormal reaction of the patient, or of later complication, without mention of misadventure at the time of the procedure
Y84.8Other 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
Y84.9Medical 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

Code Hierarchy

└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└Y84.5Insertion 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
└Y84.5Insertion 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

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