2026 ICD-10-CM Diagnosis Code H05.013Cellulitis of bilateral orbits
ICD-10-CM Codes›H00–H59›H00-H05›H05
- Billable — Valid for Submission
- Not Chronic
H05.013 is a billable ICD-10-CM diagnosis code for cellulitis of bilateral orbits. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 121 through 122. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Oculofacial plastics and orbital conditions and Skin and subcutaneous tissue infections.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abscess of left orbit
- Abscess of orbit
- Abscess of right orbit
- Bilateral orbital abscess
- Bilateral subperiosteal orbital abscess
- Cellulitis of bilateral orbits
- Cellulitis of left orbit
- Cellulitis of right orbit
- Orbital cellulitis
- Subperiosteal abscess of orbit
- Subperiosteal abscess of orbit of left eye
- Subperiosteal abscess of orbit of right eye
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Orbital Cellulitis
inflammation of the loose connective tissues around the orbit, bony structure around the eyeball. it is characterized by pain; edema of the conjunctiva; swelling of the eyelids; exophthalmos; limited eye movement; and loss of vision.Orbital Cellulitis
inflammation of the eye tissues posterior to the orbital septum, and generally secondary to an infection spread from adjacent sinuses. signs and symptoms of the affected eye include sudden loss of vision, erythema, edema, decreased eye movement, and pain. treatment is conducted via intravenous antibiotics, observation, and surgical intervention when necessary.Periorbital Cellulitis|Preseptal Cellulitis|Preseptal Cellulitis
an acute infection of the anterior portion of the eyelid and surrounding tissues.
Patient EducationClinical
Cellulitis
Cellulitis is an infection of the skin and deep underlying tissues. Group A strep (streptococcal) bacteria are the most common cause. The bacteria enter your body when you get an injury such as a bruise, burn, surgical cut, or wound.
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Convert H05.013 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About H05.013Overview
Is H05.013 (Cellulitis of orbit) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report cellulitis of bilateral orbits on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does H05.013 group to?
When cellulitis of bilateral orbits is the principal diagnosis on an inpatient stay, it groups to MS-DRG 121, 122, with relative weights from 0.7858 to 1.1633 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of H05.013?
Under the General Equivalence Mappings, cellulitis of bilateral orbits converts to ICD-9-CM 376.01 (orbital cellulitis). 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.
