H10.21

Acute toxic conjunctivitis

Not billable — category only FY2026 2025-10-01 → 2026-09-30

Exclusions 13 never code together

H10code

Excludes1

Excludes1

Excludes2

certain conditions originating in the perinatal period (P04-P96)P04-P96
certain infectious and parasitic diseases (A00-B99)A00-B99
complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)E09.3-E10.3-E11.3-E13.3-
endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
injury (trauma) of eye and orbit (S05.-)S05.-
injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
neoplasms (C00-D49)C00-D49
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)A50.01 A50.3-A51.43 A52.71

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 3

Inclusion terms

Code first

Notes

Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition

Index entries leading here 1

Conjunctivitis (staphylococcal) (streptococcal) NOS H10.9
- acute H10.3
  - chemical H10.21
  - toxic H10.21
- chemical (acute) H10.21

Alongside this code 2 same parent — H10.2

Subordinate codes 4

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2024–FY2027.