2027 ICD-10-CM Diagnosis Code S08.112AComplete traumatic amputation of left ear, initial encounter

ICD-10-CM Codes›S00–T88›S00-S09›S08

ICD-10-CM S08.112A
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

S08.112A is a billable ICD-10-CM diagnosis code for complete traumatic amputation of left ear, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 154 through 156, 963 through 965. Coders also document this condition as open wound of left external ear. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Amputation of other body parts, initial encounter.

Code Identity

ICD-10-CM Code
S08.112A
Billable Status
Yes — Valid for Submission
Code Describes
Complete traumatic amputation of left ear, initial encounter
Short Description
Complete traumatic amputation of left ear, initial encounter
Same as the full description in the CMS dataset.
Parent Code
S08.112
Complete traumatic amputation of left ear

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS00-S09Injuries to the head
CategoryS08Avulsion and traumatic amputation of part of head
This CodeS08.112AComplete traumatic amputation of left ear, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Open wound of left external ear
  • Traumatic amputation of ear
  • Traumatic amputation of left ear

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Avulsion and traumatic amputation of part of head (S08). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to S08.112A: its own notes plus those printed at S08, block S00-S09, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block S00-S09 Injuries to the head applies to 1,934 codes
  • 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

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block S00-S09 Injuries to the head applies to 1,934 codes
  • 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)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From Block S00-S09 Injuries to the head applies to 1,934 codes
  • for any associated infection

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • 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.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

From S08 Avulsion and traumatic amputation of part of head applies to 30 codes
  • The appropriate 7th character is to be added to each code from category S08
Values for category S08 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter this code
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name S08.112A, its category, or a range that includes it.

Excludes2 2

These codes carry an Excludes2 note naming S08.112A: its condition is not part of those codes, and both may be reported when the patient has both.

  • S01 Open wound of head
    traumatic amputation of part of head (S08.-) names S08.-, which includes this code
  • S09.3 Other specified and unspecified injury of middle and inner ear
    injury to external ear (S00.4-, S01.3-, S08.1-) names S08.1-, which includes this code

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ015
Amputation of other body parts, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Ear Disorders

An ear disorder is any condition that changes or harms the shape or structure of your ear. This can include abnormal ear shapes you're born with, injuries that change your ear's shape, and a growth on or in the ear.

The full article covers:

  • What is an ear disorder?
  • What causes ear disorders?
  • What are the symptoms of ear disorders?
  • How are ear disorders diagnosed?
  • How are ear disorders treated?
  • Can ear disorders be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert S08.112A to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
872.01 Open wound of auricle
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S08.112AOverview

What is the ICD-10 code for complete traumatic amputation of left ear, initial encounter?

The ICD-10-CM code for complete traumatic amputation of left ear, initial encounter is S08.112A (sometimes written as S08112A). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is S08.112A (Complete traumatic amputation of left ear) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report complete traumatic amputation of left ear, initial encounter on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What does the 7th character A in S08.112A mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for complete traumatic amputation of left ear, such as an emergency visit or first evaluation.

What MS-DRG does S08.112A group to?

When complete traumatic amputation of left ear, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 156, 964, 965, 155, 154, 963, with relative weights from 0.6656 to 2.6361 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of S08.112A?

Under the General Equivalence Mappings, complete traumatic amputation of left ear, initial encounter converts to ICD-9-CM 872.01 (open wound of auricle). The mapping is approximate, so confirm the match fits the documentation.