W49.02 – String or thread causing external constriction
ICD-10-CM 2027 diagnosis code · Exposure to inanimate mechanical forces
- Code
W49.02(claims format:W4902)- Description
- String or thread causing external constriction
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 20. External causes of morbidity (V00-Y99)
- Block
- W20-W49 Exposure to inanimate mechanical forces
- Parent codes
- W49 › W49.0
Billable codes under W49.02
W49.02 is a header code and cannot be used on claims. Choose the most specific code:
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| 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.
W49 – Exposure to other inanimate mechanical forces
- exposure to abnormal gravitational [G] forces
- exposure to inanimate mechanical forces NEC
- The appropriate 7th character is to be added to each code from category W49
Block W20-W49
Related codes in W49.0
Frequently asked questions
What is ICD-10 code W49.02?
W49.02 is the ICD-10-CM code for string or thread causing external constriction, in the block W20-W49 (Exposure to inanimate mechanical forces).
Is W49.02 a billable code?
No. W49.02 is a header code with more specific child codes; report one of the billable codes listed above.
What category does W49.02 belong to?
It belongs to category W49 – Exposure to other inanimate mechanical forces.
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.