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ICD-10-CM 2027 diagnosis code

S80.86Insect bite (nonvenomous) of lower leg

Not billable — use a more specific codeRequires 7th character

S80.86 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S80.86

S80.86 is the ICD-10-CM diagnosis code for insect bite (nonvenomous) of lower leg. It belongs to category S80 (superficial injury of knee and lower leg), block S80-S89 (injuries to the knee and lower leg) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within S80.8 (other superficial injuries of lower leg), S80.86 is specifically for insect bite (nonvenomous) of lower leg. Related codes cover abrasion of lower leg (S80.81), Blister (nonthermal) of lower leg (S80.82), external constriction of lower leg (S80.84), superficial foreign body of lower leg (S80.85) and other superficial bite of lower leg (S80.87).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The appropriate 7th character is to be added to each code from category S80

  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Notes that apply from higher levels

Instructions written at a parent level also apply to S80.86.

› From S80 Superficial injury of knee and lower leg
Excludes2
  • superficial injury of ankle and foot (S90.-)

Broader instructions also apply from S80-S89 Injuries to the knee and lower leg and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to S80.86.

Codes whose notes reference S80.86

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about S80.86

Is S80.86 billable?

No. S80.86 is a header code. Report one of its more specific subcodes instead.