H11.21 – Conjunctival adhesions and strands (localized)

ICD-10-CM 2027 diagnosis code · Disorders of conjunctiva

Non-billable header

ICD-10-CM code H11.21

Code: H11.21 (claims format: H1121)
Description: Conjunctival adhesions and strands (localized)
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 7. Diseases of the eye and adnexa (H00-H59)
Block: H10-H11 Disorders of conjunctiva
Parent codes: H11 › H11.2

Billable codes under H11.21

H11.21 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

H11 – Other disorders of conjunctiva

Excludes1 (not coded here):

keratoconjunctivitis (H16.2-)

Index terms for H11.21

Entries in the ICD-10-CM alphabetic index that lead to this code:

Adhesions, adhesive, conjunctiva

Related codes in H11.2

Frequently asked questions

What is ICD-10 code H11.21?

H11.21 is the ICD-10-CM code for conjunctival adhesions and strands (localized), in the block H10-H11 (Disorders of conjunctiva).

Is H11.21 a billable code?

No. H11.21 is a header code with more specific child codes; report one of the billable codes listed above.

What category does H11.21 belong to?

It belongs to category H11 – Other disorders of conjunctiva.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.