Y27.8XXS Contact with other hot objects, undetermined intent, sequela

ICD-10-CM Code Y27.8XXS: Contact with other hot objects, undetermined intent, sequela

ICD-10-CM code Y27.8XXS identifies a sequela involving contact with other hot objects of undetermined intent. The code is an active terminology concept with a parent of Y27.8. Official sources establish its classification as an injury or poisoning, while external cause coding frameworks provide context on how intent and encounter characters are documented. 1 2

Plain-language overview

Code Y27.8XXS is an active ICD-10-CM terminology concept representing the sequela of contact with other hot objects when the intent is undetermined, and it is semantically classified as an injury or poisoning. 1

What this code represents

The code Y27.8XXS has the parent concept Y27.8, which is contact with other hot objects of undetermined intent, and it exists within a terminology structure that includes narrower concepts. 1

External cause codes for events of undetermined intent are used only when medical record documentation explicitly specifies that the intent of the injury cannot be determined. 2

Coding details

The injury diagnosis and external cause codes in ICD-10-CM include a seventh character that provides information on the specific type of medical care encounter involved for the patient. 2

The intent of an injury or poisoning, such as unintentional, intentional self-harm, assault, or undetermined intent, is generally captured in the sixth character of the ICD-10-CM code. 2

Documentation considerations

If the medical record lacks sufficient supporting documentation regarding intent, an ICD-10-CM code for intentional self-harm might not be assigned, which directly impacts external cause coding. 2

When documentation states phrases like unknown, open verdict, or undetermined, the external cause is coded as undetermined, which applies to events where intent cannot be established. 3

What the sources add

While the terminology record defines Y27.8XXS as an active concept, mortality classification instructions separately establish that events of undetermined intent fall within the Y10-Y34 code range. 1 3

The code Y27.8XXS appears in multiple versions of the ICD-10-CM code system, including version 2023 and version 2026, confirming its continued active status across different terminology releases. 1 5

Sources

1. ICD-10-CM Y27.8XXS terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. National Health Statistics Reports — cdc.gov; accessed 2026-07-27.
3. Instructions for Classifying Multiple Causes of Death, 2019 – Section V — cdc.gov; accessed 2026-07-27.
4. FY 2026 ICD-10-CM Coding Guidelines ( ... — cms.gov; accessed 2026-07-27.
5. Browse Code Systems — vsac.nlm.nih.gov; accessed 2026-07-27.