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ICD-10-CM · H40.009GeneralSystemic

Suspect Glaucoma

Find information on Suspect Glaucoma diagnosis, including relevant healthcare documentation, clinical terminology, and medical coding. Learn about glaucoma suspect ICD-10 codes, glaucoma suspect diagnosis codes, and clinical documentation improvement for suspect glaucoma. Explore resources for ocular hypertension, optic nerve assessment, visual field testing, and intraocular pressure measurement in suspect glaucoma cases. Understand glaucoma staging and management for patients with a suspect glaucoma diagnosis. This resource provides guidance for healthcare professionals on proper documentation and coding related to suspect glaucoma.

Also known as
Glaucoma SuspectPreglaucoma
Definition

Increased eye pressure causing optic nerve damage, potentially leading to vision loss.

Clinical signs

Elevated intraocular pressure, optic nerve changes (cupping), visual field defects.

Common settings

Ophthalmologist office, optometry clinic, glaucoma specialist.

Related Codes

ICD-10 Code Families

Complete code families applicable to H40.009

H40-H42
Glaucoma
Z01.0-Z01.9
Encounter for eye exam
R52
Pain, not elsewhere classified
H53-H54
Visual disturbances
Code Comparison

When to use each related code

DescriptionWhen to use
Suspect glaucomaUse when glaucoma is suspected but not confirmed by testing. Include laterality (e.g., right, left, bilateral).
Ocular hypertensionElevated intraocular pressure without optic nerve damage or visual field loss. Document readings.
Normal tension glaucomaGlaucoma with optic nerve damage and visual field loss, despite normal IOP. Requires specialized testing.
Documentation

Best-practice checklist

  • Suspect glaucoma ICD-10 code (H40.0-)
  • Detailed exam findings (IOP, ONH, VF)
  • Risk factors documented (family hx, age)
  • Clinical suspicion rationale specified
  • Treatment plan/follow-up documented
Coding & Audit Risks

Common pitfalls to avoid

Unspecified Laterality

Coding glaucoma without specifying laterality (right, left, bilateral) can lead to claim rejections and inaccurate data.

Suspect vs. Confirmed

Incorrectly coding suspect glaucoma as confirmed glaucoma can impact reimbursement and quality reporting.

Missing Staging/Type

Failing to document and code the stage or type of suspect glaucoma can hinder accurate risk assessment and care planning.

Mitigation

Best-practice tips

  • 01Document optic nerve exam findings: cup-to-disc ratio, RNFL.
  • 02Code suspected glaucoma with ICD-10 H40.0-H40.9, 765.1 for infants.
  • 03Perform tonometry, pachymetry, visual field tests for accurate diagnosis.
  • 04CDI: Query physician for glaucoma stage, medication details if applicable.
  • 05Review and comply with glaucoma screening guidelines for early detection.
Clinical Decision Support

Step-by-step checklist

  1. 1

    Intraocular pressure documented (ICD-10 H40.1)

  2. 2

    Optic nerve assessment complete (SNOMED CT 303443000)

  3. 3

    Visual field test results reviewed (CPT 92083)

  4. 4

    Gonioscopy findings noted (SNOMED CT 422734002)

Documentation Template

Ready-to-paste narrative

Suspect glaucoma evaluation performed on [Date] for [Patient Name], [Age], due to [reason for visit; e.g., family history of glaucoma, elevated intraocular pressure, abnormal optic nerve appearance on screening].  Patient reports [Patient symptoms; e.g., no visual changes, occasional blurry vision, halos around lights].  Ocular history includes [Relevant ocular history; e.g., myopia, history of ocular trauma, previous eye surgery].  Medical history includes [Relevant medical history; e.g., diabetes, hypertension, migraines].  Family history is significant for [Family ocular history; e.g., glaucoma in mother, cataracts in father].  Medications include [List medications].  Allergies include [List allergies].  Visual acuity measured [VA right eye] right eye and [VA left eye] left eye with correction.  Intraocular pressure (IOP) measured [IOP OD] mmHg in the right eye and [IOP OS] mmHg in the left eye by [Tonometry method; e.g., Goldmann applanation tonometry].  Gonioscopy revealed [Gonioscopy findings; e.g., open angles, narrow angles, angle closure].  Optic nerve evaluation showed [Optic nerve description; e.g., cup-to-disc ratio of [C/D ratio OD] in the right eye and [C/D ratio OS] in the left eye, thinning of the neuroretinal rim, notching].  Visual field testing [Performed or not performed; If performed, include findings; e.g., Humphrey visual field shows early glaucomatous changes in the superior arcuate area of the right eye].  Pachymetry measured central corneal thickness of [CCT OD] microns in the right eye and [CCT OS] microns in the left eye.  Assessment: Suspect glaucoma.  Plan:  [Plan; e.g., Repeat IOP measurements and visual field testing in [Timeframe; e.g., 3 months], initiate topical glaucoma therapy with [Medication name and dosage], patient education provided regarding glaucoma management and importance of follow-up. Referral to ophthalmology for further evaluation and management].

Clinical accuracy: This information is provided for documentation and coding guidance and should not replace professional medical judgment.

Coding standard: ICD-10-CM, current FY guidelines.