Contact with steam, hot vapors and hot objects, undetermined intent (Y27) ICD-10-CM
The Y27 code range covers contact with steam, hot vapors and hot objects, undetermined intent with 25 ICD-10-CM diagnosis codes. 18 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to each code from category Y27
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
Codes in the Y27 Range 25 codes · 18 billable
- Y27 Contact with steam, hot vapors and hot objects, undetermined intentNon-billable
- Y27.0 Contact with steam and hot vapors, undetermined intentNon-billable
- Y27.0XXA Contact with steam and hot vapors, undetermined intent, initial encounter
- Y27.0XXD Contact with steam and hot vapors, undetermined intent, subsequent encounter
- Y27.0XXS Contact with steam and hot vapors, undetermined intent, sequela
- Y27.1 Contact with hot tap water, undetermined intentNon-billable
- Y27.1XXA Contact with hot tap water, undetermined intent, initial encounter
- Y27.1XXD Contact with hot tap water, undetermined intent, subsequent encounter
- Y27.1XXS Contact with hot tap water, undetermined intent, sequela
- Y27.2 Contact with hot fluids, undetermined intentNon-billable
- Y27.2XXA Contact with hot fluids, undetermined intent, initial encounter
- Y27.2XXD Contact with hot fluids, undetermined intent, subsequent encounter
- Y27.2XXS Contact with hot fluids, undetermined intent, sequela
- Y27.3 Contact with hot household appliance, undetermined intentNon-billable
- Y27.3XXA Contact with hot household appliance, undetermined intent, initial encounter
- Y27.3XXD Contact with hot household appliance, undetermined intent, subsequent encounter
- Y27.3XXS Contact with hot household appliance, undetermined intent, sequela
- Y27.8 Contact with other hot objects, undetermined intentNon-billable
- Y27.8XXA Contact with other hot objects, undetermined intent, initial encounter
- Y27.8XXD Contact with other hot objects, undetermined intent, subsequent encounter
- Y27.8XXS Contact with other hot objects, undetermined intent, sequela
- Y27.9 Contact with unspecified hot objects, undetermined intentNon-billable
- Y27.9XXA Contact with unspecified hot objects, undetermined intent, initial encounter
- Y27.9XXD Contact with unspecified hot objects, undetermined intent, subsequent encounter
- Y27.9XXS Contact with unspecified hot objects, undetermined intent, sequela
About the Y27 Code Range
These codes describe contact with steam, hot vapors, or hot objects when the intent of the event is undetermined.
The subdivisions distinguish steam and hot vapors (Y27.0), hot tap water (Y27.1), and hot fluids (Y27.2). They also separate hot household appliances (Y27.3) from other (Y27.8) or unspecified hot objects (Y27.9). Each subdivision has a final character for an initial encounter, subsequent encounter, or sequela, meaning a later effect.
Questions About This Page
How many billable codes are in the Y27 range?
Of the 25 codes in this range, 18 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the Y27 range classify?
The range classifies contact with steam, hot vapors and hot objects, undetermined intent. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
