Codes / ICD10CM / H00.016

H00.016 Hordeolum externum left eye, unspecified eyelid

ICD10CM code

ICD10CM

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Name of the Condition

  • Hordeolum Externum Left Eye, Unspecified Eyelid
  • Commonly known as a "stye"

Summary

A hordeolum externum is a localized infection or inflammation of the eyelid glands, often presenting as a red, painful lump on the edge of the eyelid. It is more commonly known as a stye and usually affects just one eye.

Causes

Hordeolum externum is typically caused by a bacterial infection, most often Staphylococcus aureus, which infects the oil glands at the base of the eyelashes.

Risk Factors

  • Poor eyelid hygiene
  • Touching the eyes with unclean hands
  • Use of contaminated eye makeup or contact lenses
  • History of blepharitis (inflammation of the eyelids)
  • Having seborrheic dermatitis or rosacea

Symptoms

  • Red, swollen bump along the edge of the eyelid
  • Pain or tenderness in the affected area
  • Increased tearing
  • Crustiness around the eyelid
  • Sensitivity to light

Diagnosis

A physical examination by an eye care professional is usually sufficient to diagnose a stye. Additional tests are rarely needed unless recurrent styes suggest an underlying condition.

Treatment Options

  • Warm compresses applied to the eyelid several times a day to promote drainage.
  • Over-the-counter pain relievers for discomfort.
  • Antibiotic ointments or drops if a secondary bacterial infection is present.
  • Rarely, minor surgical intervention to drain a persistent stye.

Prognosis and Follow-Up

Most styes resolve on their own within 1-2 weeks with appropriate at-home care. Persistent or recurrent styes may require medical attention and further investigation.

Complications

If untreated, a stye can lead to a more serious eyelid infection or a chalazion (a chronic, painless lump caused by gland obstruction).

Lifestyle & Prevention

  • Maintaining good eyelid hygiene by regularly cleaning the eyelids.
  • Avoiding rubbing the eyes with unwashed hands.
  • Properly removing makeup and caring for contact lenses.
  • Regularly cleaning or replacing eye makeup.

When to Seek Professional Help

  • If the stye doesn't improve with home treatment within a few days.
  • Increasing swelling and pain, or it impairs vision.
  • Recurrent styes, which could indicate an underlying condition.

Additional Resources

Tips for Medical Coders

  • Ensure accuracy by confirming the laterality (left eye) and external location (hordeolum externum).
  • Avoid coding errors by double-checking the unspecified eyelid status.
  • Verify documentation specifies "external" to differentiate from internal hordeolum.
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