Alphabetic Index FY2027

H00.01

Hordeolum externum

FY2027Chapter 7: Diseases of the eye and adnexa/H00–H05 Disorders of eyelid, lacrimal system and orbit

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

H00.01 is a non-billable ICD-10-CM code header for hordeolum externum. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are H00.011 Hordeolum externum right upper eyelid; H00.012 Hordeolum externum right lower eyelid; H00.013 Hordeolum externum right eye, unspecified eyelid; H00.014 Hordeolum externum left upper eyelid and 3 more. Its coding notes include 13 Excludes2 entries.

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (13 notes)
Inherited from H00–H05 Disorders of eyelid, lacrimal system and orbit
Inherited from Chapter 7 Diseases of the eye and adnexa
  • 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)

Inclusion terms

Conditions classified to this code.

This code
  • Hordeolum NOS
  • Stye

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 7 Diseases of the eye and adnexa
  • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition

More specific codes under H00.01 7