2026 ICD-10-CM Diagnosis Code S01.121DLaceration with foreign body of right eyelid and periocular area, subsequent encounter
S01.121D is a billable ICD-10-CM diagnosis code for laceration with foreign body of right eyelid and periocular area, subsequent encounter. The 7th character D marks it as a subsequent encounter code, used during routine care in the healing or recovery phase. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 949 through 950. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Open wounds of head and neck, subsequent encounter.
Code Identity
Code Classification
Present on Admission (POA)Billing
S01.121D is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
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
Eye Injuries
The structure of your face helps protect your eyes from injury. Still, injuries can damage your eye, sometimes severely enough that you could lose your vision. Most eye injuries are preventable. If you play sports or work in certain jobs, you may need protection.
Read the full article at MedlinePlus
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Convert S01.121D to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S01.121DOverview
Is S01.121D a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report laceration with foreign body of right eyelid and periocular area, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character D in S01.121D mean?
The final character D marks a subsequent encounter: use it for routine care while the laceration with foreign body of right eyelid and periocular area is healing, after active treatment has ended.
What MS-DRG does S01.121D group to?
When laceration with foreign body of right eyelid and periocular area, subsequent encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 949, 950, with relative weights from 0.6277 to 1.1897 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S01.121D 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 laceration with foreign body of right eyelid and periocular area, subsequent encounter on inpatient claims.
What is the ICD-9 equivalent of S01.121D?
Under the General Equivalence Mappings, laceration with foreign body of right eyelid and periocular area, subsequent encounter converts to ICD-9-CM V58.89 (other specfied aftercare). 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.
