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Corneal ulcer

Abdominal aortic aneurysm Acute coronary syndrome (NSTEMI)Acute coronary syndrome (STEMI)Acute decompensated heart failure Acute limb ischemia Acute mesenteric ischemia Aortic dissection Aortic stenosis Atrial fibrillation and flutter Bradyarrhythmia and heart block Cardiac arrest Deep vein thrombosis Myocarditis Pericarditis Pulmonary embolism Stable angina Superficial thrombophlebitis Superior vena cava syndrome Supraventricular tachycardia Syncope (cardiogenic)Unstable angina Ventricular tachycardia

Acute bronchitis Acute respiratory failure Aspiration pneumonia Asthma exacerbation Bronchiolitis Community-acquired pneumonia COVID-19 pneumonia COPD exacerbation Croup Croup (laryngotracheobronchitis)Epiglottitis Hemothorax Hospital-acquired pneumonia Pleural effusion Pneumothorax (traumatic)Pulmonary contusion Spontaneous pneumothorax

Bell's palsy Benign paroxysmal positional vertigo Brain abscess Cauda equina syndrome Cervical radiculopathy Concussion (mild traumatic brain injury)Encephalitis Guillain-Barré syndrome Hemorrhagic stroke (intracerebral)Ischemic stroke Lumbar radiculopathy Malignant spinal cord compression Migraine Peripheral neuropathy (acute)Retropharyngeal abscess Schizophrenia (acute exacerbation)Seizure (breakthrough:known epilepsy)Seizure (first-time)Spinal cord injury Status epilepticus Subarachnoid hemorrhage Tension headache Transient ischemic attack Traumatic brain injury (moderate-severe)Vestibular neuritis Viral meningitis

Acute appendicitis Acute cholecystitis Acute diverticulitis Acute pancreatitis Anal fissure Choledocholithiasis and cholangitis Clostridioides difficile colitis Gastritis Gastroenteritis (viral and bacterial)Gastroesophageal reflux disease Incarcerated or strangulated hernia Inflammatory bowel disease flare Large bowel obstruction Lower GI hemorrhage Peptic ulcer disease Perforated viscus Small bowel obstruction Upper GI hemorrhage

Acute prostatitis Acute urinary retention Ectopic pregnancy Epididymitis Orchitis Ovarian torsion Paraphimosis Pelvic inflammatory disease Priapism Pyelonephritis Renal laceration Ruptured ovarian cyst Testicular torsion Tubo-ovarian abscess Urinary tract infection (uncomplicated)Urolithiasis (renal colic)Vaginal bleeding (non-pregnant)

Acute sinusitis Acute tonsillitis Acute upper respiratory infection Animal bite Bacterial meningitis Cellulitis Conjunctivitis (bacterial)Dental abscess Endocarditis Febrile neutropenia Fournier gangrene Hand-foot-mouth disease Hepatitis (acute)Herpes zoster HIV-related illness Human bite Impetigo Infected diabetic foot ulcer Infectious mononucleosis Influenza Necrotizing fasciitis Osteomyelitis Otitis externa Parasitic infection Periorbital cellulitis Peritonsillar abscess Scabies Sepsis Septic arthritis Spontaneous bacterial peritonitis Tick-borne illness (Lyme disease)Tinea infection Tuberculosis Viral exanthem Wound infection

Achilles tendon rupture ACL and mceniscus tear Ankle fracture Ankle sprain Burn Calcaneus fracture Cervical spine fracture Clavicle fracture Dental avulsion Distal radius fracture Drowning Elbow fracture and dislocation Electrical injury Facial bone fracture Facial laceration Femur fracture Fingertip amputation Forearm fracture (radius and ulna)Frostbite Hand:finger laceration Heat exhaustion Heat stroke Hip fracture Humeral shaft fracture Knee dislocation Knee sprain Lightning injury Mandible fracture Metacarpal fracture Metatarsal fracture Muscle strain Nasal fracture Non-accidental trauma Orbital fracture Patella fracture Phalanx fracture (finger)Proximal humerus fracture Pulmonary contusion Rib fracture Rotator cuff tear (acute traumatic)Scalp laceration Scaphoid fracture Shoulder dislocation Skull fracture Splenic laceration Sternal fracture Supracondylar pediatric fracture Tendon laceration (hand:wrist)Thoracic and lumbar spine fracture Tibia:fibula fracture Tibial plateau fracture Toe fracture Traumatic epistaxis Traumatic hyphema

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Acute anxiety Acute psychosis Agitation:behavioral emergency Bipolar disorder Conversion disorder Major depressive episode Neuroleptic malignant syndrome Suicidal ideation and attempt

Acute low back pain (mechanical)Bursitis Cervical radiculopathy Costochondritis Gout (acute)Lumbar radiculopathy Pseudogout Tendinitis

Acute eczema (Eczema acute flare)Allergic contact dermatitis Erythema multiforme Henoch-Schönlein purpura Pressure injury Psoriasis (acute flare)Stevens-Johnson syndrome Toxic epidermal necrolysis Urticaria (acute)

Envenomation (snake, spider, insect)High-altitude illness Hypothermia

Acute chest syndrome Coagulopathy Hyperviscosity syndrome Sickle cell crisis (vaso-occlusive)Symptomatic anemia Thrombocytopenia (severe)Tumor lysis syndrome

Bronchiolitis Croup Emergency delivery Febrile seizure Kawasaki disease Neonatal jaundice Neonatal sepsis Nursemaid's elbow Pediatric fever 0 to 28 days Pediatric fever 29 to 60 days Pediatric fever 61 to 90 days Pyloric stenosis Slipped capital femoral epiphysis Intussusception

Adrenal crisis Diabetic ketoacidosis Hypercalcemia Hyperosmolar hyperglycemic state Hypertensive emergency Hypertensive urgency Hypoglycemia Myasthenia gravis crisis Myxedema coma Severe hyperkalemia Severe hyponatremia Thyroid storm

Acute laryngitis Acute otitis media Acute pharyngitis Cerumen impaction Epistaxis (anterior)Nasal foreign body Otitis externa Tympanic membrane perforation

Acute angle-closure glaucoma Central retinal artery occlusion Chemical eye injury Corneal abrasion Corneal ulcer Globe rupture Ocular foreign body Orbital cellulitis Retinal detachment

Hyperemesis gravidarum Painful vaginal bleeding in pregnancy Placenta previa Placental abruption Preeclampsia:eclampsia Preterm labor Threatened:inevitable:incomplete abortion

Anaphylaxis Angioedema Cannabis-induced hyperemesis

Corneal ulcer

Clinical Assessment Checklist

Browse categories and answer follow-up questions to refine your symptom profile.

Triage and time-critical risks

Vision-threatening priorities

Rapid ophthalmology involvement for suspected infectious keratitis

If central ulcer

If large infiltrate

If hypopyon

If marked vision reduction

Immediate escalation for perforation risk

If Seidel positive

If stromal melt

Immediate safety checks

Contact lens removal

Lens saved in sterile container for possible culture

Topical anesthetic limited to exam only

No outpatient topical anesthetic due to corneal toxicity risk

Hemodynamic and systemic instability screen

Sepsis concern

If fever

If immunocompromised with systemic symptoms

Key Concepts

Core framing

Corneal ulcer as stromal infiltrate with epithelial defect

High risk of rapid scarring in visual axis

Risk of corneal thinning and perforation

Microbial keratitis as ophthalmic emergency

Time-to-therapy linked to visual outcomes

Working diagnosis labels for coding

ICD-10 corneal ulcer

H16.0

H16.00

SNOMED CT concepts

Corneal ulcer

Infectious keratitis

Immediate decision points

Endophthalmitis concern

Severe pain out of proportion

Vitritis concern

Marked vision loss

Recent intraocular surgery or injection

Emergent ophthalmology

Orbital cellulitis concern

Pain with eye movements

Proptosis

Restricted extraocular movements

Open globe concern

Penetrating trauma history

Misshapen pupil

Shallow anterior chamber

Seidel positive

Medical Disclaimer

SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.

Last Reviewed: January 15, 2026 by SymptomDX Medical Team

SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.

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