T69.9XXD – Effect of reduced temperature, unspecified, subsequent encounter

ICD-10-CM 2027 diagnosis code · Other and unspecified effects of external causes

Billable code

ICD-10-CM code T69.9XXD

Code: T69.9XXD (claims format: T699XXD)
Description: Effect of reduced temperature, unspecified, subsequent encounter
Short description: Effect of reduced temperature, unspecified, subs encntr
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
Block: T66-T78 Other and unspecified effects of external causes
Parent codes: T69 › T69.9

7th character values

Codes in this category need a 7th character to describe the encounter or episode of care.

Character	Meaning
`A`	initial encounter
`D`	subsequent encounter
`S`	sequela

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

T69 – Other effects of reduced temperature

Excludes2 (not included here):

frostbite (T33-T34)

Use additional code:

code to identify source of exposure:
Exposure to excessive cold of man-made origin (W93)
Exposure to excessive cold of natural origin (X31)

7th character note:

The appropriate 7th character is to be added to each code from category T69

Block T66-T78

Code also:

, if applicable, place of occurrence, such as:
highway rest stop (Y92.523)
school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
service areas as the place of occurrence of the external cause (Y92.52-)
single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
transport vehicle as the place of occurrence of the external cause (Y92.81-)

Related codes in T69.9

Frequently asked questions

What is ICD-10 code T69.9XXD?

T69.9XXD is the ICD-10-CM code for effect of reduced temperature, unspecified, subsequent encounter, in the block T66-T78 (Other and unspecified effects of external causes).

Is T69.9XXD a billable code?

Yes. T69.9XXD is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does T69.9XXD belong to?

It belongs to category T69 – Other effects of reduced temperature.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.