2027 ICD-10-CM Diagnosis Code H40.052Ocular hypertension, left eye
ICD-10-CM Codes›H00–H59›H40-H42›H40
- Billable — Valid for Submission
- Chronic Condition
H40.052 is a billable ICD-10-CM diagnosis code for ocular hypertension, left eye. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 124 through 125. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Glaucoma.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Drug-induced ocular hypertension
- Drug-induced ocular hypertension of left eye
- Elevated left intraocular pressure
- Ghost cell ocular hypertension
- Ghost cell ocular hypertension of left eye
- Hemolytic ocular hypertension
- Hemolytic ocular hypertension of left eye
- Intraocular pressure of left eye above reference range
- Ocular hypertension caused by silicone oil
- Ocular hypertension due to angle recession
- Ocular hypertension due to anterior segment anomaly
- Ocular hypertension due to increased episcleral venous pressure
- Ocular hypertension due to intraocular hemorrhage
- Ocular hypertension due to intraocular neoplasm
- Ocular hypertension due to intraocular neoplasm of left eye
- Ocular hypertension due to ocular surgery
- Ocular hypertension due to ocular vascular disorder
- Ocular hypertension due to systemic syndrome
- Ocular hypertension of left eye
- Ocular hypertension of left eye caused by corticosteroid
- Ocular hypertension of left eye caused by silicone oil
- Ocular hypertension of left eye due to angle recession
- Ocular hypertension of left eye due to anterior segment anomaly
- Ocular hypertension of left eye due to aphakia
- Ocular hypertension of left eye due to increased episcleral venous pressure
- Ocular hypertension of left eye due to intraocular hemorrhage
- Ocular hypertension of left eye due to neovascularization
- Ocular hypertension of left eye due to ocular surgery
- Ocular hypertension of left eye due to ocular trauma
- Ocular hypertension of left eye due to ocular vascular disorder
- Ocular hypertension of left eye due to pigment dispersion syndrome
- Ocular hypertension of left eye due to pseudoexfoliation
- Ocular hypertension of left eye due to retinal detachment
- Ocular hypertension of left eye due to systemic syndrome
- Ocular hypertension of left eye due to uveitis
- Phacolytic ocular hypertension
- Phacolytic ocular hypertension of left eye
- Primary angle closure of left eye with intraocular pressure above reference range
- Primary angle closure with intraocular pressure above reference range
- Primary ocular hypertension
- Primary ocular hypertension of left eye
- Secondary ocular hypertension caused by corticosteroid
- Secondary ocular hypertension due to aphakia
- Secondary ocular hypertension due to neovascularization
- Secondary ocular hypertension due to ocular trauma
- Secondary ocular hypertension due to pigment dispersion syndrome
- Secondary ocular hypertension due to pseudoexfoliation
- Secondary ocular hypertension due to retinal detachment
- Secondary ocular hypertension due to uveitis
- Secondary ocular hypertension of left eye
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to H40.052: its own notes plus those printed at H40 and Chapter 7. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury (trauma) of eye and orbit (S05.-)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)
Notes
General instructions on how these codes are used.
- Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Ocular Hypertension
a condition in which the intraocular pressure is elevated above normal and which may lead to glaucoma.
Patient EducationClinical
Glaucoma
Glaucoma is a group of diseases that can damage the optic nerve of one, or both, of your eyes. This can result in vision loss. There are different types of glaucoma, but the most common type is open-angle glaucoma. Other less common types include angle-closure glaucoma, and congenital glaucoma.
The full article covers:
- What is glaucoma?
- What causes glaucoma?
- What are the symptoms of glaucoma?
- How is glaucoma diagnosed?
- What are the treatments for glaucoma?
- Can glaucoma be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert H40.052 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About H40.052Overview
What is the ICD-10 code for ocular hypertension, left eye?
The ICD-10-CM code for ocular hypertension, left eye is H40.052 (sometimes written as H40052). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is H40.052 (Ocular hypertension) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report ocular hypertension, left eye on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does H40.052 group to?
When ocular hypertension, left eye is the principal diagnosis on an inpatient stay, it groups to MS-DRG 125, 124, with relative weights from 0.7699 to 1.2470 depending on complications. Higher weights mean higher Medicare reimbursement.
Can H40.052 be reported with a code from H44.51?
Not as a rule. The Excludes1 note at H40, which applies to H40.052, lists "absolute glaucoma (H44.51-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of H40.052?
Under the General Equivalence Mappings, ocular hypertension, left eye converts to ICD-9-CM 365.04 (ocular hypertension). The mapping is approximate, so confirm the match fits the documentation.
