2019 ICD-10-CM Diagnosis Code H46

Optic neuritis

    2016 2017 2018 2019 Non-Billable/Non-Specific Code
  • H46 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2019 edition of ICD-10-CM H46 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of H46 - other international versions of ICD-10 H46 may differ.
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes 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 a type 2 excludes note appears under a code it is acceptable to use both the code (H46) and the excluded code together.
  • ischemic optic neuropathy (
    ICD-10-CM Diagnosis Code H47.01

    Ischemic optic neuropathy

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    H47.01-
    )
  • neuromyelitis optica [Devic] (
    ICD-10-CM Diagnosis Code G36.0

    Neuromyelitis optica [Devic]

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Demyelination in optic neuritis
    Type 1 Excludes
    • optic neuritis NOS (H46)
    G36.0
    )
The following code(s) above H46 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to H46:
  • H00-H59
    2019 ICD-10-CM Range H00-H59

    Diseases of the eye and adnexa

    Note
    • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition
    Type 2 Excludes
    • 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)
    Diseases of the eye and adnexa
Clinical Information
  • A disorder characterized by inflammation of the optic nerve. Causes include autoimmune disorders, infections, toxins, drugs, and multiple sclerosis. It may manifest with acute loss of vision and pain.
  • Inflammation of the optic nerve. Commonly associated conditions include autoimmune disorders such as multiple sclerosis, infections, and granulomatous diseases. Clinical features include retro-orbital pain that is aggravated by eye movement, loss of color vision, and contrast sensitivity that may progress to severe visual loss, an afferent pupillary defect (marcus-gunn pupil), and in some instances optic disc hyperemia and swelling. Inflammation may occur in the portion of the nerve within the globe (neuropapillitis or anterior optic neuritis) or the portion behind the globe (retrobulbar neuritis or posterior optic neuritis).
  • Inflammation of the second cranial nerve or optic nerve; commonly associated conditions include autoimmune disorders such as multiple sclerosis, infections, and granulomatous diseases.
  • What: optic neuritis. Optic neuritis: the inflammation, degeneration, or demyelination of the optic nerve. Why: optic neuritis may be present in patients with sarcoidosis or reiter's syndrome (rarely). How: clinically, patients with optic neuritis present with sudden loss of central vision and pain on moving the eye. Opthalmoscopically there may be hyperemia of the optic disc and distention of the large retinal veins. At later stages the disk margins are blurred and may be slightly elevated simulating papilledema. Refs: vaugn, d and asbury, t: general ophthamology, 8th edition, 1977.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
Code annotations containing back-references to H46:
  • Type 1 Excludes: G36.0
    ICD-10-CM Diagnosis Code G36.0

    Neuromyelitis optica [Devic]

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Demyelination in optic neuritis
    Type 1 Excludes
    • optic neuritis NOS (H46)
  • Type 2 Excludes: G52
    ICD-10-CM Diagnosis Code G52

    Disorders of other cranial nerves

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • disorders of acoustic [8th] nerve (H93.3)
    • disorders of optic [2nd] nerve (H46, H47.0)
    • paralytic strabismus due to nerve palsy (H49.0-H49.2)
ICD-10-CM Codes Adjacent To H46
H44.812 …… left eye
H44.813 …… bilateral
H44.819 …… unspecified eye
H44.82 Luxation of globe
H44.821 …… right eye
H44.822 …… left eye
H44.823 …… bilateral
H44.829 …… unspecified eye
H44.89 Other disorders of globe
H44.9 Unspecified disorder of globe
H46 Optic neuritis
H46.0 Optic papillitis
H46.00 …… unspecified eye
H46.01 …… right eye
H46.02 …… left eye
H46.03 …… bilateral
H46.1 Retrobulbar neuritis
H46.10 …… unspecified eye
H46.11 …… right eye
H46.12 …… left eye
H46.13 …… bilateral

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.