S20.36 – Insect bite (nonvenomous) of front wall of thorax
ICD-10-CM 2027 diagnosis code · Injuries to the thorax
- Code
S20.36(claims format:S2036)- Description
- Insect bite (nonvenomous) of front wall of thorax
- 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
- S20-S29 Injuries to the thorax
- Parent codes
- S20 › S20.3
Billable codes under S20.36
S20.36 is a header code and cannot be used on claims. Choose the most specific code:
- S20.361 – Insect bite (nonvenomous) of right front wall of thoraxHeader (more codes below)
- S20.362 – Insect bite (nonvenomous) of left front wall of thoraxHeader (more codes below)
- S20.363 – Insect bite (nonvenomous) of bilateral front wall of thoraxHeader (more codes below)
- S20.364 – Insect bite (nonvenomous) of middle front wall of thoraxHeader (more codes below)
- S20.369 – Insect bite (nonvenomous) of unspecified front wall of thoraxHeader (more codes below)
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.
S20 – Superficial injury of thorax
- The appropriate 7th character is to be added to each code from category S20
Block S20-S29
- injuries of breast
- injuries of chest (wall)
- injuries of interscapular area
- burns and corrosions (T20-T32)
- effects of foreign body in bronchus (T17.5)
- effects of foreign body in esophagus (T18.1)
- effects of foreign body in lung (T17.8)
- effects of foreign body in trachea (T17.4)
- frostbite (T33-T34)
- injuries of axilla
- injuries of clavicle
- injuries of scapular region
- injuries of shoulder
- insect bite or sting, venomous (T63.4)
Index terms for S20.36
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in S20.3
- S20.30 – Unspecified superficial injuries of front wall of thoraxHeader
- S20.31 – Abrasion of front wall of thoraxHeader
- S20.32 – Blister (nonthermal) of front wall of thoraxHeader
- S20.34 – External constriction of front wall of thoraxHeader
- S20.35 – Superficial foreign body of front wall of thoraxHeader
- S20.37 – Other superficial bite of front wall of thoraxHeader
Frequently asked questions
What is ICD-10 code S20.36?
S20.36 is the ICD-10-CM code for insect bite (nonvenomous) of front wall of thorax, in the block S20-S29 (Injuries to the thorax).
Is S20.36 a billable code?
No. S20.36 is a header code with more specific child codes; report one of the billable codes listed above.
What category does S20.36 belong to?
It belongs to category S20 – Superficial injury of thorax.
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.