2027 ICD-10-CM Diagnosis Code H20.13Chronic iridocyclitis, bilateral
ICD-10-CM Codes›H00–H59›H15-H22›H20
- Billable — Valid for Submission
- Chronic Condition
H20.13 is a billable ICD-10-CM diagnosis code for chronic iridocyclitis, bilateral. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 124 through 125. Coders also document this condition as bilateral chronic anterior uveitis of eyes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Uveitis and ocular inflammation.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Bilateral chronic anterior uveitis of eyes
- Bilateral chronic iritis
- Chronic anterior uveitis of right eye
- Chronic inflammation of uveal tract of bilateral eyes
- Chronic inflammation of uveal tract of left eye
- Chronic inflammation of uveal tract of right eye
- Chronic iridocyclitis of left eye
- Chronic iritis of left eye
- Chronic iritis of right eye
- Chronic uveitis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to H20.13: its own notes plus those printed at H20.1 and Chapter 7. A note printed at a category, block or chapter applies to every code under it.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- 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)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
Notes
General instructions on how these codes are used.
- Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name H20.13, its category, or a range that includes it.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Chronic Iridocyclitis
uveitis that is usually insidious in onset, bilateral, and can be asymptomatic, most often affecting the anterior uveal tract, including the iris and ciliary body, and can result in long-term complications. it is most commonly associated with certain forms of juvenile idiopathic arthritis, but may occur independent of arthritis.Iridocyclitis
acute or chronic inflammation of the iris and ciliary body characterized by exudates into the anterior chamber, discoloration of the iris, and constricted, sluggish pupil. symptoms include radiating pain, photophobia, lacrimation, and interference with vision.
Patient EducationClinical
Eye Diseases
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Read the full article at MedlinePlus
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Convert H20.13 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About H20.13Overview
What is the ICD-10 code for chronic iridocyclitis, bilateral?
The ICD-10-CM code for chronic iridocyclitis, bilateral is H20.13 (sometimes written as H2013). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is H20.13 (Chronic iridocyclitis) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report chronic iridocyclitis, bilateral on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does H20.13 group to?
When chronic iridocyclitis, bilateral is the principal diagnosis on an inpatient stay, it groups to MS-DRG 125, 124, with relative weights from 0.7699 to 1.2470 depending on complications. Higher weights mean higher Medicare reimbursement.
Does H20.13 need an additional code?
When the condition applies, yes. The Use Additional Code note at H20.1, which applies to H20.13, reads: code for any associated cataract (H26.21-). The additional code is reported after H20.13.
What is the ICD-9 equivalent of H20.13?
Under the General Equivalence Mappings, chronic iridocyclitis, bilateral converts to ICD-9-CM 364.10 (chr iridocyclitis NOS). The mapping is approximate, so confirm the match fits the documentation.
