H20.01
⚠ Non-billable
Primary iridocyclitis
ICD-10-CM · FY2026 · Diseases of the Eye and Adnexa
Code
H20.01
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Diseases of the Eye and Adnexa
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code H20.01?
ICD-10-CM code H20.01 represents Primary iridocyclitis. It is a non-billable header code requiring a more specific subcategory in the Diseases of the Eye and Adnexa chapter, effective October 1, 2025 – September 30, 2026.
Is H20.01 billable?
No. H20.01 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is H20.01 in?
H20.01 belongs to the Diseases of the Eye and Adnexa chapter (H00–H59) of ICD-10-CM.
Related codes in the H20 category
H20
Iridocyclitis
Non-billable
H20.0
Acute and subacute iridocyclitis
Non-billable
H20.1
Chronic iridocyclitis
Non-billable
H20.2
Lens-induced iridocyclitis
Non-billable
H20.8
Other iridocyclitis
Non-billable
H20.9
Unspecified iridocyclitis
Billable
H20.00
Unspecified acute and subacute iridocyclitis
Billable
H20.02
Recurrent acute iridocyclitis
Non-billable
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