2026 ICD-10-CM Diagnosis Code H05.331Deformity of right orbit due to trauma or surgery

ICD-10-CM Codes›H00–H59›H00-H05›H05

ICD-10-CM H05.331
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H05.331 is a billable ICD-10-CM diagnosis code for deformity of right orbit due to trauma or surgery. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 124 through 125. Coders also document this condition as right orbital deformity. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Oculofacial plastics and orbital conditions.

Code Identity

ICD-10-CM Code
H05.331
Billable Status
Yes — Valid for Submission
Code Describes
Deformity of right orbit due to trauma or surgery
Short Description
Deformity of right orbit due to trauma or surgery
Same as the full description in the CMS dataset.
Parent Code
H05.33
Deformity of orbit due to trauma or surgery

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH00-H05Disorders of eyelid, lacrimal system and orbit
CategoryH05Disorders of orbit
This CodeH05.331Deformity of right orbit due to trauma or surgery

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Right orbital deformity
  • Right traumatic orbital deformity
  • Traumatic orbital deformity

Clinical ClassificationClinical

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

CCSR EYE008
Oculofacial plastics and orbital conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

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Read the full article at MedlinePlus

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

Convert H05.331 to ICD-9-CMHistory

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

ICD-9-CM
376.47 Orbit deform d/t trauma
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H05.331Overview

Is H05.331 (Deformity of orbit due to trauma or surgery) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report deformity of right orbit due to trauma or surgery on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H05.331 group to?

When deformity of right orbit due to trauma or surgery is the principal diagnosis on an inpatient stay, it groups to MS-DRG 124, 125, with relative weights from 0.7678 to 1.3231 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of H05.331?

Under the General Equivalence Mappings, deformity of right orbit due to trauma or surgery converts to ICD-9-CM 376.47 (orbit deform d/t trauma). 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.