ICD-10 Sections
  1. Certain infectious and parasitic diseases (A00-B99)
  2. Neoplasms (C00-D49)
  3. Diseases of the blood, blood-forming organs & disorders involving immune mechanism (D50-D89)
  4. Endocrine, nutritional and metabolic diseases (E00-E89)
  5. Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
  6. Diseases of the nervous system (G00-G99)
  7. Diseases of the eye and adnexa (H00-H59)
  8. Diseases of the ear and mastoid process (H60-H95)
  9. Diseases of the circulatory system (I00-I99)
  10. Diseases of the respiratory system (J00-J99)
  11. Diseases of the digestive system (K00-K95)
  12. Diseases of the skin and subcutaneous tissue (L00-L99)
  13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
  14. Diseases of the genitourinary system (N00-N99)
  15. Pregnancy, childbirth and the puerperium (O00-O9A)
  16. Certain conditions originating in the perinatal period (P00-P96)
  17. Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  18. Symptoms, signs and abnormal clinical and laboratory findings, not classified (R00-R99)
  19. Injury, poisoning and certain other consequences of external causes (S00-T88)
  20. External causes of morbidity
  21. Factors influencing health status and contact with health services (Z00-Z99)

Everyone covered by HIPAA must use ICD-10 starting October 1, 2014. This includes health care providers and payers who do not deal with Medicare claims. Organizations that are not covered by HIPAA, but use ICD-9 codes should be aware that their coding may become obsolete if they do not transition to ICD-10. ICD-10 compliance means that a HIPAA-covered entity uses ICD-10 codes for health care services provided on or after October 1, 2014. ICD-9 diagnosis and inpatient procedure codes cannot be used for services provided on or after this date.

ICD-10 Codes for Diseases of the eye and adnexa

Notes
  • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition
Excludes 2
  • 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)

ICD-10 Categories
  • Disorders of eyelid, lacrimal system and orbit (H00-H05)

    • H00 - Hordeolum and chalazion
    • H01 - Other inflammation of eyelid
    • H02 - Other disorders of eyelid
    • H04 - Disorders of lacrimal system
    • H05 - Disorders of orbit
  • Disorders of conjunctiva (H10-H11)

    • H10 - Conjunctivitis
    • H11 - Other disorders of conjunctiva
  • Disorders of sclera, cornea, iris and ciliary body (H15-H22)

    • H15 - Disorders of sclera
    • H16 - Keratitis
    • H17 - Corneal scars and opacities
    • H18 - Other disorders of cornea
    • H20 - Iridocyclitis
    • H21 - Other disorders of iris and ciliary body
    • H22 - Disorders of iris and ciliary body in diseases classified elsewhere
  • Disorders of lens (H25-H28)

    • H25 - Age-related cataract
    • H26 - Other cataract
    • H27 - Other disorders of lens
    • H28 - Cataract in diseases classified elsewhere
  • Disorders of choroid and retina (H30-H36)

    • H30 - Chorioretinal inflammation
    • H31 - Other disorders of choroid
    • H32 - Chorioretinal disorders in diseases classified elsewhere
    • H33 - Retinal detachments and breaks
    • H34 - Retinal vascular occlusions
    • H35 - Other retinal disorders
    • H36 - Retinal disorders in diseases classified elsewhere
  • Glaucoma (H40-H42)

    • H40 - Glaucoma
    • H42 - Glaucoma in diseases classified elsewhere
  • Disorders of vitreous body and globe (H43-H44)

    • H43 - Disorders of vitreous body
    • H44 - Disorders of globe
  • Disorders of optic nerve and visual pathways (H46-H47)

    • H46 - Optic neuritis
    • H47 - Other disorders of optic [2nd] nerve and visual pathways
  • Disorders of ocular muscles, binocular movement, accommodation and refraction (H49-H52)

    • H49 - Paralytic strabismus
    • H50 - Other strabismus
    • H51 - Other disorders of binocular movement
    • H52 - Disorders of refraction and accommodation
  • Visual disturbances and blindness (H53-H54)

    • H53 - Visual disturbances
    • H54 - Blindness and low vision
  • Other disorders of eye and adnexa (H55-H57)

    • H55 - Nystagmus and other irregular eye movements
    • H57 - Other disorders of eye and adnexa
  • Intraoperative and postprocedural complications and disorders of eye and adnexa, not elsewhere classified (H59)

    • H59 - Intraoperative and postprocedural complications and disorders of eye and adnexa, not elsewhere classified
Instructional Footnote

iIncludes
The word 'Includes' appears immediately under certain categories to further define, or give examples of, the content of the category.

1Excludes Type 1
A type 1 Excludes note is a pure excludes. It means 'NOT CODED HERE!' An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

2Excludes Type 2
A type 2 excludes note represents 'Not included here'. An excludes2 note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When an Excludes2 note appears under a code it is acceptable to use both the code and the excluded code together.

3Code First/Use Additional Code notes (etiology/manifestation paired codes)
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a 'use additional code' note at the etiology code, and a 'code first' note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, 'in diseases classified elsewhere.' Codes with this title are a component of the etiology/ manifestation convention. The code title indicates that it is a manifestation code. 'In diseases classified elsewhere' codes are never permitted to be used as first listed or principal diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.

4Code Also
A code also note instructs that 2 codes may be required to fully describe a condition but the sequencing of the two codes is discretionary, depending on the severity of the conditions and the reason for the encounter.

57th characters & placeholder X
For codes less than 6 characters that require a 7th character a placeholder X should be assigned for all characters less than 6. The 7th character must always be the 7th character of a code