Category · FY2027

W53 Contact with rodent

Header · not billable
Codes take a 7th character

W53 is not billable. The category heads 24 billable codes in FY2027, grouped under 4 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Where it sits

Chapter 20 External causes of morbidity (V00-Y99)
W50-W64 Exposure to animate mechanical forces (W50-W64)
W53 Contact with rodent

Billable codes: 24
Subdivisions: 4
CC / MCC codes: 0 / 0
HCC V28 codes: 0
New FY2027: 0
Index entries: 0

Codes in W53

W53.0
Contact with mouse
Header
W53.01
Bitten by mouse +7th: A D S
Needs 7th characterExempt
W53.09
Other contact with mouse +7th: A D S
Needs 7th characterExempt
W53.1
Contact with rat
Header
W53.11
Bitten by rat +7th: A D S
Needs 7th characterExempt
W53.19
Other contact with rat +7th: A D S
Needs 7th characterExempt
W53.2
Contact with squirrel
Header
W53.21
Bitten by squirrel +7th: A D S
Needs 7th characterExempt
W53.29
Other contact with squirrel +7th: A D S
Needs 7th characterExempt
W53.8
Contact with other rodent
Header
W53.81
Bitten by other rodent +7th: A D S
Needs 7th characterExempt
W53.89
Other contact with other rodent +7th: A D S
Needs 7th characterExempt

Sources of each column. Rows marked +7th need a 7th character: pick one to build the full code; its code card has its own flags.

Instructions

At W53

Includes

contact with saliva, feces or urine of rodent

Notes that also apply

Block W50-W64 instructions (Excludes1 1): printed on the block page.

Chapter 20 instructions (Notes 1): printed on the chapter 20 page.

7th characters

7th characters for W53 defined here

The appropriate 7th character is to be added to each code from category W53

7th characters for W53
7th	Meaning (NCHS)
A	initial encounter
D	subsequent encounter
S	sequela

A code that takes a 7th character is invalid without it; the placeholder X fills a code shorter than 6 characters (Official Guidelines I.A.5). How 7th characters work.