ICD-10 Diagnosis Code H31.21


Diagnosis Code H31.21

ICD-10: H31.21
Short Description: Choroideremia
Long Description: Choroideremia
This is the 2017 version of the ICD-10-CM diagnosis code H31.21

Code Classification
  • Diseases of the eye and adnexa
    • Disorders of choroid and retina (H30-H36)
      • Other disorders of choroid (H31)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code H31.21 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Choroideremia

Information for Patients

Eye Diseases

Some eye problems are minor and don't last long. But some can lead to a permanent loss of vision.

Common eye problems include

  • Refractive errors
  • Cataracts - clouded lenses
  • Glaucoma - a disorder caused by damage to the optic nerve
  • Retinal disorders - problems with the nerve layer at the back of the eye
  • Macular degeneration - a disease that destroys sharp, central vision
  • Diabetic eye problems
  • Conjunctivitis - an infection also known as pinkeye

Your best defense is to have regular checkups, because eye diseases do not always have symptoms. Early detection and treatment could prevent vision loss. See an eye care professional right away if you have a sudden change in vision, if everything looks dim, or if you see flashes of light. Other symptoms that need quick attention are pain, double vision, fluid coming from the eye, and inflammation.

NIH: National Eye Institute

  • Anisocoria
  • Chemosis
  • Choroidal dystrophies
  • Coloboma of the iris
  • Episcleritis
  • Eye and orbit ultrasound
  • Eye burning - itching and discharge
  • Eye pain
  • Eye redness
  • Fluorescein angiography
  • Fluorescein eye stain
  • Heterochromia
  • Ophthalmoscopy
  • Optic glioma
  • Optic nerve atrophy
  • Optic neuritis
  • Orbit CT scan
  • Orbital pseudotumor
  • Photophobia
  • Pinguecula
  • Pterygium
  • Pupil - white spots
  • Scleritis
  • Slit-lamp exam
  • Standard ophthalmic exam
  • Subconjunctival hemorrhage
  • Uveitis
  • Watery eyes

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Choroideremia Choroideremia is a condition characterized by progressive vision loss that mainly affects males. The first symptom of this condition is usually an impairment of night vision (night blindness), which can occur in early childhood. A progressive narrowing of the field of vision (tunnel vision) follows, as well as a decrease in the ability to see details (visual acuity). These vision problems are due to an ongoing loss of cells (atrophy) in the specialized light-sensitive tissue that lines the back of the eye (retina) and a nearby network of blood vessels (the choroid). The vision impairment in choroideremia worsens over time, but the progression varies among affected individuals. However, all individuals with this condition will develop blindness, most commonly in late adulthood.
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