2021 ICD-10-CM Code H21.5

Other and unspecified adhesions and disruptions of iris and ciliary body

Version 2021
Non-Billable Code
Unspecified Code

Not Valid for Submission

H21.5 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other and unspecified adhesions and disruptions of iris and ciliary body. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Unspecified diagnosis codes like H21.5 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

ICD-10:H21.5
Short Description:Oth and unsp adhes and disruptions of iris and ciliary body
Long Description:Other and unspecified adhesions and disruptions of iris and ciliary body

Code Classification

Specific Coding for Oth and unsp adhes and disruptions of iris and ciliary body

Header codes like H21.5 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for oth and unsp adhes and disruptions of iris and ciliary body:

  • H21.50 - Unspecified adhesions of iris
  • H21.501 - Unspecified adhesions of iris, right eye
  • H21.502 - Unspecified adhesions of iris, left eye
  • H21.503 - Unspecified adhesions of iris, bilateral
  • H21.509 - Unspecified adhesions of iris and ciliary body, unspecified eye
  • H21.51 - Anterior synechiae (iris)
  • H21.511 - Anterior synechiae (iris), right eye
  • H21.512 - Anterior synechiae (iris), left eye
  • H21.513 - Anterior synechiae (iris), bilateral
  • H21.519 - Anterior synechiae (iris), unspecified eye
  • H21.52 - Goniosynechiae
  • H21.521 - Goniosynechiae, right eye
  • H21.522 - Goniosynechiae, left eye
  • H21.523 - Goniosynechiae, bilateral
  • H21.529 - Goniosynechiae, unspecified eye
  • H21.53 - Iridodialysis
  • H21.531 - Iridodialysis, right eye
  • H21.532 - Iridodialysis, left eye
  • H21.533 - Iridodialysis, bilateral
  • H21.539 - Iridodialysis, unspecified eye
  • H21.54 - Posterior synechiae (iris)
  • H21.541 - Posterior synechiae (iris), right eye
  • H21.542 - Posterior synechiae (iris), left eye
  • H21.543 - Posterior synechiae (iris), bilateral
  • H21.549 - Posterior synechiae (iris), unspecified eye
  • H21.55 - Recession of chamber angle
  • H21.551 - Recession of chamber angle, right eye
  • H21.552 - Recession of chamber angle, left eye
  • H21.553 - Recession of chamber angle, bilateral
  • H21.559 - Recession of chamber angle, 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

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code H21.5:


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. 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.

Information for Patients


Eye Diseases

Some eye problems are minor and don't last long. But some can lead to a permanent loss of vision.

Common eye problems include

Your best defense is to have regular checkups, because eye diseases do not always have symptoms. Early detection and treatment could prevent vision loss. See an eye care professional right away if you have a sudden change in vision, if everything looks dim, or if you see flashes of light. Other symptoms that need quick attention are pain, double vision, fluid coming from the eye, and inflammation.

NIH: National Eye Institute


[Learn More]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)