2020 ICD-10-CM Diagnosis Code H57.02

Anisocoria

    2016 2017 2018 2019 2020 Billable/Specific Code
  • H57.02 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM H57.02 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of H57.02 - other international versions of ICD-10 H57.02 may differ.
The following code(s) above H57.02 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 H57.02:
  • H00-H59
    2020 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
Approximate Synonyms
  • Anisocoria (unequal size of pupils)
Clinical Information
  • Unequal pupil size, which may represent a benign physiologic variant or a manifestation of disease. Pathologic anisocoria reflects an abnormality in the musculature of the iris (iris diseases) or in the parasympathetic or sympathetic pathways that innervate the pupil. Physiologic anisocoria refers to an asymmetry of pupil diameter, usually less than 2mm, that is not associated with disease.
ICD-10-CM H57.02 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 123 Neurological eye disorders

Convert H57.02 to ICD-9-CM

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
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to H57.02:
  • Anisocoria (pupil) H57.02
  • Anomaly, anomalous (congenital) (unspecified type) Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • pupil Q13.2
      ICD-10-CM Diagnosis Code Q13.2

      Other congenital malformations of iris

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Anisocoria, congenital
      • Atresia of pupil
      • Congenital malformation of iris NOS
      • Corectopia
      • function H57.00
        ICD-10-CM Diagnosis Code H57.00

        Unspecified anomaly of pupillary function

          2016 2017 2018 2019 2020 Billable/Specific Code
        • anisocoria H57.02

ICD-10-CM Codes Adjacent To H57.02
H55.03 Visual deprivation nystagmus
H55.04 Dissociated nystagmus
H55.09 Other forms of nystagmus
H55.8 Other irregular eye movements
H55.81 Saccadic eye movements
H55.89 Other irregular eye movements
H57 Other disorders of eye and adnexa
H57.0 Anomalies of pupillary function
H57.00 Unspecified anomaly of pupillary function
H57.01 Argyll Robertson pupil, atypical
H57.02 Anisocoria
H57.03 Miosis
H57.04 Mydriasis
H57.05 Tonic pupil
H57.051 …… right eye
H57.052 …… left eye
H57.053 …… bilateral
H57.059 …… unspecified eye
H57.09 Other anomalies of pupillary function
H57.1 Ocular pain
H57.10 …… unspecified eye

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