- H21.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM H21.9 became effective on October 1, 2022.
- This is the American ICD-10-CM version of H21.9 – other international versions of ICD-10 H21.9 may differ.
ICD-10-CM H21.9 is grouped within Diagnostic Related Group(s):
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 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
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to H21.9:
- anterior > Disease, diseased
- chamber > anterior H21.9
- aqueous (chamber) > Disease, diseased
- ciliary body > Disease, diseased
- anterior chamber > eye H57.9
- iris > Disease, diseased
- uveal tract (anterior) > Disease, diseased
- iris > Disorder (of)
- iris sphincter > muscle, muscular NEC G72.89