S90.466 – Insect bite (nonvenomous), unspecified lesser toe(s)

ICD-10-CM 2027 diagnosis code · Injuries to the ankle and foot

Non-billable header

ICD-10-CM code S90.466

Code: S90.466 (claims format: S90466)
Description: Insect bite (nonvenomous), unspecified lesser toe(s)
Billable: No – use a more specific code below
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: S90-S99 Injuries to the ankle and foot
Parent codes: S90 › S90.4 › S90.46

Billable codes under S90.466

S90.466 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.

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.

S90 – Superficial injury of ankle, foot and toes

7th character note:

The appropriate 7th character is to be added to each code from category S90

Block S90-S99

Excludes2 (not included here):

burns and corrosions (T20-T32)
fracture of ankle and malleolus (S82.-)
frostbite (T33-T34)
insect bite or sting, venomous (T63.4)

Related codes in S90.46

Frequently asked questions

What is ICD-10 code S90.466?

S90.466 is the ICD-10-CM code for insect bite (nonvenomous), unspecified lesser toe(s), in the block S90-S99 (Injuries to the ankle and foot).

Is S90.466 a billable code?

No. S90.466 is a header code with more specific child codes; report one of the billable codes listed above.

What category does S90.466 belong to?

It belongs to category S90 – Superficial injury of ankle, foot and toes.

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.