2026 ICD-10-CM Diagnosis Code S01.342SPuncture wound with foreign body of left ear, sequela
S01.342S is a billable ICD-10-CM diagnosis code for puncture wound with foreign body of left ear, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 604 through 605. The code is exempt from POA reporting. Coders also document this condition as foreign body in left ear. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
S01.342S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Foreign body in left ear
- Puncture wound of ear region
- Puncture wound of head with foreign body
- Puncture wound of left ear
- Puncture wound of left ear with foreign body
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Open wound of head (S01). 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 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Ear Disorders
Your ear has three main parts: outer, middle and inner. You use all of them in hearing. Sound waves come in through your outer ear. They reach your middle ear, where they make your eardrum vibrate. The vibrations are transmitted through three tiny bones, called ossicles, in your middle ear.
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Convert S01.342S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S01.342SOverview
Is S01.342S (Puncture wound with foreign body of left ear) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report puncture wound with foreign body of left ear, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S01.342S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the puncture wound with foreign body of left ear itself has resolved, not the original event.
What MS-DRG does S01.342S group to?
When puncture wound with foreign body of left ear, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 604, 605, with relative weights from 0.9160 to 1.4721 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S01.342S exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for puncture wound with foreign body of left ear, sequela on inpatient claims.
What is the ICD-9 equivalent of S01.342S?
Under the General Equivalence Mappings, puncture wound with foreign body of left ear, sequela converts to ICD-9-CM 906.0 (lt eff opn wnd head/trnk). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
