2022 ICD-10-CM Diagnosis Code H21.9

Unspecified disorder of iris and ciliary body

    2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  • H21.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2022 edition of ICD-10-CM H21.9 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of H21.9 - other international versions of ICD-10 H21.9 may differ.
The following code(s) above H21.9 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 H21.9:
  • H00-H59
    2022 ICD-10-CM Range H00-H59

    Diseases of the eye and adnexa

    • 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
  • H21
    ICD-10-CM Diagnosis Code H21

    Other disorders of iris and ciliary body

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Type 2 Excludes
    Other disorders of iris and ciliary body
Approximate Synonyms
  • Ciliary body disorder
  • Ciliary body disorder (eye condition)
  • Disorder of ciliary body
  • Disorder of iris
  • Iris disorder
  • Iris disorder (eye condition)
  • Iris lesion
  • Iris lesion (eye condition)
  • Lesion of iris
ICD-10-CM H21.9 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 124 Other disorders of the eye with mcc
  • 125 Other disorders of the eye without mcc

Convert H21.9 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
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change

Diagnosis Index entries containing back-references to H21.9:

ICD-10-CM Codes Adjacent To H21.9
H21.559 …… unspecified eye
H21.56 Pupillary abnormalities
H21.561 Pupillary abnormality, right eye
H21.562 Pupillary abnormality, left eye
H21.563 Pupillary abnormality, bilateral
H21.569 Pupillary abnormality, unspecified eye
H21.8 Other specified disorders of iris and ciliary body
H21.81 Floppy iris syndrome
H21.82 Plateau iris syndrome (post-iridectomy) (postprocedural)
H21.89 Other specified disorders of iris and ciliary body
H21.9 Unspecified disorder of iris and ciliary body
H22 Disorders of iris and ciliary body in diseases classified elsewhere
H25 Age-related cataract
H25.0 Age-related incipient cataract
H25.01 Cortical age-related cataract
H25.011 …… right eye
H25.012 …… left eye
H25.013 …… bilateral
H25.019 …… unspecified eye
H25.03 Anterior subcapsular polar age-related cataract
H25.031 …… right eye

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