Coding and coverage · ICD-10-CM

S01 › S01.3

S01.35 Open bite of ear

Not billable (header)Chapter 19

This code needs a 7th character (use X as a placeholder for missing characters).

Check coverage with this diagnosis

Codes under this one

  • S01.351 Open bite of right earHeader
  • S01.352 Open bite of left earHeader
  • S01.359 Open bite of unspecified earHeader

Instructional notes

Chapter 19

Excludes2Not included here: the patient may have both; report both when both are present.
Use additional codeAdd a second code for the full picture.
  • code to identify any retained foreign body, if applicable (Z18.-)
Notes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

Section S00-S09

Excludes2Not included here: the patient may have both; report both when both are present.
  • burns and corrosions (T20-T32)
  • effects of foreign body in ear (T16)
  • effects of foreign body in larynx (T17.3)
  • effects of foreign body in mouth NOS (T18.0)
  • effects of foreign body in nose (T17.0-T17.1)
  • effects of foreign body in pharynx (T17.2)
  • effects of foreign body on external eye (T15.-)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)
Code also
  • for any associated infection
Includes
  • injuries of ear
  • injuries of eye
  • injuries of face [any part]
  • injuries of gum
  • injuries of jaw
  • injuries of oral cavity
  • injuries of palate
  • injuries of periocular area
  • injuries of scalp
  • injuries of temporomandibular joint area
  • injuries of tongue
  • injuries of tooth

S01

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • open skull fracture (S02.- with 7th character B)
Excludes2Not included here: the patient may have both; report both when both are present.
  • injury of eye and orbit (S05.-)
  • traumatic amputation of part of head (S08.-)
Code also
  • any associated:
  • injury of cranial nerve (S04.-)
  • injury of muscle and tendon of head (S09.1-)
  • intracranial injury (S06.-)
  • wound infection
7th charactersThe appropriate 7th character is to be added to each code from category S01
  • A initial encounter
  • D subsequent encounter
  • S sequela

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
Inclusion terms
  • Bite of ear NOS

Chapter 19: Injury, poisoning and certain other consequences of external causes · S00-S09 Injuries to the head (S00-S09)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.