S00.442 is the authoritative medical code for External constriction of left ear. This classification is used in medical billing and clinical recording to specify the clinical criteria for external constriction of left ear (ICD-10-CM S00.442), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
External constriction of left ear is a non-billable ICD-10-CM category code S00.442. A more specific billable subcode must be selected for claims submission. 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. Excludes1 (not coded here): diffuse cerebral contusion S06.2-; focal cerebral contusion S06.3-; injury of eye and orbit S05.-; open wound of head S01.-. Excludes2 (not included here): 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. 7th character: The appropriate 7th character is to be added to each code from category S00.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for S00.442 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- 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
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- diffuse cerebral contusion S06.2-
- focal cerebral contusion S06.3-
- injury of eye and orbit S05.-
- open wound of head S01.-
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it 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
Additional codes that may be required to fully describe the encounter.
- for any associated infection
Frequently Asked Questions (FAQ) & Clinical Guidance
Can S00.442 be billed directly?
No. S00.442 (External constriction of left ear) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Does S00.442 require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category S00.
What can't be coded together with S00.442?
Per Excludes1 instructions, S00.442 must not be reported with: diffuse cerebral contusion (S06.2-); focal cerebral contusion (S06.3-); injury of eye and orbit (S05.-); open wound of head (S01.-).
Can S00.442 be reported alongside related conditions?
Per Excludes2 instructions, S00.442 and the following may both be reported 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).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as S00.442, with their registry titles.
- S00 — Superficial injury of head
- S00-S09 — Injuries to the head (S00-S09)
- S00-S99 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-S99)
- S00.0 — Superficial injury of scalp
- S00.00 — Unspecified superficial injury of scalp
- S00.00A — Unspecified superficial injury of scalp, initial encounter
- S00.00D — Unspecified superficial injury of scalp, subsequent encounter
- S00.00S — Unspecified superficial injury of scalp, sequela
- S00.00XA — Unspecified superficial injury of scalp, initial encounter
- S00.00XD — Unspecified superficial injury of scalp, subsequent encounter
- S00.00XS — Unspecified superficial injury of scalp, sequela
- S00.01 — Abrasion of scalp
- S00.01A — Abrasion of scalp, initial encounter
- S00.01D — Abrasion of scalp, subsequent encounter
- S00.01S — Abrasion of scalp, sequela
- S00.01XA — Abrasion of scalp, initial encounter
- S00.01XD — Abrasion of scalp, subsequent encounter
- S00.01XS — Abrasion of scalp, sequela
- S00.02 — Blister (nonthermal) of scalp
- S00.02A — Blister (nonthermal) of scalp, initial encounter
- S00.02D — Blister (nonthermal) of scalp, subsequent encounter
- S00.02S — Blister (nonthermal) of scalp, sequela
- S00.02XA — Blister (nonthermal) of scalp, initial encounter
- S00.02XD — Blister (nonthermal) of scalp, subsequent encounter
- S00.02XS — Blister (nonthermal) of scalp, sequela
- S00.03 — Contusion of scalp
- S00.03A — Contusion of scalp, initial encounter
- S00.03D — Contusion of scalp, subsequent encounter
- S00.03S — Contusion of scalp, sequela
- S00.03XA — Contusion of scalp, initial encounter
- S00.03XD — Contusion of scalp, subsequent encounter
- S00.03XS — Contusion of scalp, sequela
- S00.04 — External constriction of part of scalp
- S00.04A — External constriction of part of scalp, initial encounter
- S00.04D — External constriction of part of scalp, subsequent encounter
- S00.04S — External constriction of part of scalp, sequela
- S00.04XA — External constriction of part of scalp, initial encounter
- S00.04XD — External constriction of part of scalp, subsequent encounter
- S00.04XS — External constriction of part of scalp, sequela
- S00.05 — Superficial foreign body of scalp
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code S01.442
Puncture wound with foreign body of left cheek and temporomandibular area