ICD-10-CM Excludes1 Notes · Chapter 7 · FY 2027 H00-H59

Excludes1 Notes in Chapter 7: Diseases of the eye and adnexa ICD-10-CM

An Excludes1 note means "NOT CODED HERE": the excluded code should never be reported together with the code above the note. In Chapter 7 (H00-H59), notes printed in the chapter name other codes 119 times, and Excludes1 Notes anywhere in the Tabular List name the chapter’s codes 57 times, covering 47 distinct codes, categories and ranges. Switch views to read the list either way.

✓ From the official FY 2027 ICD-10-CM Tabular ListDefinitions follow the Official Guidelines, Section I.A
119
References in Its Notes
57
References to Its Codes
47
Chapter Codes Named
H00-H59
Chapter 7
Chapter 7

Excludes1 Notes by the code that carries the note

72 of 72 shown
  • H01.0 Blepharitis applies to 27 codes
    • blepharoconjunctivitis (H10.5-)
  • H02 Other disorders of eyelid applies to 259 codes
  • H02.81 Retained foreign body in eyelid applies to 7 codes
    • laceration of eyelid with foreign body (S01.12-)
    • retained intraocular foreign body (H44.6-, H44.7-)
    • superficial foreign body of eyelid and periocular area (S00.25-)
  • H04 Disorders of lacrimal system applies to 120 codes
    • congenital malformations of lacrimal system (Q10.4-Q10.6)
  • H04.3 Acute and unspecified inflammation of lacrimal passages applies to 16 codes
    • neonatal dacryocystitis (P39.1)
  • H04.53 Neonatal obstruction of nasolacrimal duct applies to 4 codes
    • congenital stenosis and stricture of lacrimal duct (Q10.5)
  • H05 Disorders of orbit applies to 102 codes
    • congenital malformation of orbit (Q10.7)
  • H05.3 Deformity of orbit applies to 21 codes
    • congenital deformity of orbit (Q10.7)
    • hypertelorism (Q75.2)
  • H05.5 Retained (old) foreign body following penetrating wound of orbit applies to 4 codes
    • current penetrating wound of orbit (S05.4-)
  • H10 Conjunctivitis applies to 72 codes
  • H10.21 Acute toxic conjunctivitis applies to 4 codes
    • burn and corrosion of eye and adnexa (T26.-)
  • H10.23 Serous conjunctivitis, except viral applies to 4 codes
    • viral conjunctivitis (B30.-)
  • H10.3 Unspecified acute conjunctivitis applies to 4 codes
    • ophthalmia neonatorum NOS (P39.1)
  • H10.44 Vernal conjunctivitis
    • vernal keratoconjunctivitis with limbar and corneal involvement (H16.26-)
  • H10.81 Pingueculitis applies to 4 codes
  • H11 Other disorders of conjunctiva applies to 95 codes
  • H11.0 Pterygium of eye applies to 28 codes
  • H11.14 Conjunctival xerosis, unspecified applies to 4 codes
    • xerosis of conjunctiva due to vitamin A deficiency (E50.0, E50.1)
  • H11.15 Pinguecula applies to 4 codes
  • H16.22 Keratoconjunctivitis sicca, not specified as Sjogren's applies to 4 codes
  • H16.26 Vernal keratoconjunctivitis, with limbar and corneal involvement applies to 4 codes
    • vernal conjunctivitis without limbar and corneal involvement (H10.44)
  • H18.4 Corneal degeneration applies to 23 codes
  • H18.44 Keratomalacia applies to 4 codes
    • keratomalacia due to vitamin A deficiency (E50.4)
  • H18.7 Other and unspecified corneal deformities applies to 17 codes
  • H20.0 Acute and subacute iridocyclitis applies to 21 codes
    • iridocyclitis, iritis, uveitis (due to) (in) diabetes mellitus (E08-E13 with .39)
    • iridocyclitis, iritis, uveitis (due to) (in) diphtheria (A36.89)
    • iridocyclitis, iritis, uveitis (due to) (in) gonococcal (A54.32)
    • iridocyclitis, iritis, uveitis (due to) (in) herpes (simplex) (B00.51)
    • iridocyclitis, iritis, uveitis (due to) (in) herpes zoster (B02.32)
    • iridocyclitis, iritis, uveitis (due to) (in) late congenital syphilis (A50.39)
    • iridocyclitis, iritis, uveitis (due to) (in) late syphilis (A52.71)
    • iridocyclitis, iritis, uveitis (due to) (in) sarcoidosis (D86.83)
    • iridocyclitis, iritis, uveitis (due to) (in) syphilis (A51.43)
    • iridocyclitis, iritis, uveitis (due to) (in) toxoplasmosis (B58.09)
    • iridocyclitis, iritis, uveitis (due to) (in) tuberculosis (A18.54)
  • H21.0 Hyphema applies to 4 codes
  • H21.4 Pupillary membranes applies to 4 codes
    • congenital pupillary membranes (Q13.8)
  • H21.5 Other and unspecified adhesions and disruptions of iris and ciliary body applies to 28 codes
  • H21.56 Pupillary abnormalities applies to 4 codes
    • congenital deformity of pupil (Q13.2-)
  • H26 Other cataract applies to 69 codes
    • congenital cataract (Q12.0)
  • H27 Other disorders of lens applies to 19 codes
    • congenital lens malformations (Q12.-)
    • mechanical complications of intraocular lens implant (T85.2)
    • pseudophakia (Z96.1)
  • H27.0 Aphakia applies to 4 codes
    • cataract extraction status (Z98.4-)
    • congenital absence of lens (Q12.3)
    • congenital aphakia (Q12.3)
  • H28 Cataract in diseases classified elsewhere
  • H31.01 Macula scars of posterior pole (postinflammatory) (post-traumatic) applies to 4 codes
    • postprocedural choriorentinal scar (H59.81-)
  • H32 Chorioretinal disorders in diseases classified elsewhere
  • H33 Retinal detachments and breaks applies to 65 codes
  • H33.0 Retinal detachment with retinal break applies to 24 codes
    • serous retinal detachment (without retinal break) (H33.2-)
  • H33.1 Retinoschisis and retinal cysts applies to 16 codes
    • congenital retinoschisis (Q14.1)
    • microcystoid degeneration of retina (H35.42-)
  • H33.2 Serous retinal detachment applies to 4 codes
    • central serous chorioretinopathy (H35.71-)
  • H33.3 Retinal breaks without detachment applies to 16 codes
    • chorioretinal scars after surgery for detachment (H59.81-)
  • H34 Retinal vascular occlusions applies to 45 codes
  • H35.2 Other non-diabetic proliferative retinopathy applies to 4 codes
    • proliferative vitreo-retinopathy with retinal detachment (H33.4-)
  • H35.35 Cystoid macular degeneration applies to 4 codes
    • cystoid macular edema following cataract surgery (H59.03-)
  • H35.4 Peripheral retinal degeneration applies to 25 codes
    • hereditary retinal degeneration (dystrophy) (H35.5-)
  • H35.5 Hereditary retinal dystrophy applies to 5 codes
    • dystrophies primarily involving Bruch's membrane (H31.1-)
  • H35.7 Separation of retinal layers applies to 13 codes
    • retinal detachment (serous) (H33.2-)
    • rhegmatogenous retinal detachment (H33.0-)
  • H36 Retinal disorders in diseases classified elsewhere applies to 9 codes
  • H40 Glaucoma applies to 252 codes
    • absolute glaucoma (H44.51-)
    • congenital glaucoma (Q15.0)
    • traumatic glaucoma due to birth injury (P15.3)
  • H40.2 Primary angle-closure glaucoma applies to 37 codes
  • H42 Glaucoma in diseases classified elsewhere
    • glaucoma (in) onchocerciasis (B73.02)
    • glaucoma (in) syphilis (A52.71)
    • glaucoma (in) tuberculous (A18.59)
    • neovascular secondary angle closure glaucoma (H40.84-)
  • H43.0 Vitreous prolapse applies to 4 codes
    • vitreous syndrome following cataract surgery (H59.0-)
    • traumatic vitreous prolapse (S05.2-)
  • H43.8 Other disorders of vitreous body applies to 9 codes
    • proliferative vitreo-retinopathy with retinal detachment (H33.4-)
  • H44.0 Purulent endophthalmitis applies to 12 codes
    • bleb associated endophthalmitis (H59.4-)
  • H44.1 Other endophthalmitis applies to 13 codes
    • bleb associated endophthalmitis (H59.4-)
  • H44.6 Retained (old) intraocular foreign body, magnetic applies to 28 codes
    • current intraocular foreign body (S05.-)
  • H44.7 Retained (old) intraocular foreign body, nonmagnetic applies to 28 codes
    • current intraocular foreign body (S05.-)
  • H46.1 Retrobulbar neuritis applies to 4 codes
    • syphilitic retrobulbar neuritis (A52.15)
  • H47.6 Disorders of visual cortex applies to 12 codes
  • H49.4 Progressive external ophthalmoplegia applies to 4 codes
  • H50.0 Esotropia applies to 13 codes
  • H50.1 Exotropia applies to 13 codes
  • H52.1 Myopia applies to 4 codes
  • H53.0 Amblyopia ex anopsia applies to 20 codes
    • amblyopia due to vitamin A deficiency (E50.5)
  • H53.1 Subjective visual disturbances applies to 17 codes
    • subjective visual disturbances due to vitamin A deficiency (E50.5)
    • visual hallucinations (R44.1)
  • H53.12 Transient visual loss applies to 4 codes
    • amaurosis fugax (G45.3-)
    • transient retinal artery occlusion (H34.0-)
  • H53.6 Night blindness applies to 5 codes
    • night blindness due to vitamin A deficiency (E50.5)
  • H54 Blindness and low vision applies to 44 codes
  • H54.8 Legal blindness, as defined in USA
    • legal blindness with specification of impairment level (H54.0-H54.7)
  • H57.01 Argyll Robertson pupil, atypical
    • syphilitic Argyll Robertson pupil (A52.19)
  • H59 Intraoperative and postprocedural complications and disorders of eye and adnexa, not elsewhere classified applies to 66 codes
    • mechanical complication of intraocular lens (T85.2)
    • mechanical complication of other ocular prosthetic devices, implants and grafts (T85.3)
    • pseudophakia (Z96.1)
    • secondary cataracts (H26.4-)
  • H59.1 Intraoperative hemorrhage and hematoma of eye and adnexa complicating a procedure applies to 8 codes
    • intraoperative hemorrhage and hematoma of eye and adnexa due to accidental puncture or laceration during a procedure (H59.2-)
  • H59.4 Inflammation (infection) of postprocedural bleb applies to 4 codes
    • filtering (vitreous) bleb after glaucoma surgery status (Z98.83)

The first view lists notes printed in this chapter (a note on a category or block applies to every code beneath it). The second lists codes of this chapter named by Excludes1 Notes anywhere in the Tabular List, including notes in other chapters.

Questions About Excludes1 Notes

What does an Excludes1 note mean?

An Excludes1 note means “NOT CODED HERE!”: the excluded code should never be used at the same time as the code above the note. It is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition (Section I.A.12.a). The FY 2027 Tabular List has 5,411 of them; 5,284 name other codes, with 5,710 references to 3,528 distinct codes, categories and ranges.

Is there any exception to an Excludes1 note?

Yes: when the two conditions are unrelated to each other. The Guidelines’ example is F45.8, whose Excludes1 note names sleep related teeth grinding (G47.63). A patient with psychogenic dysmenorrhea (an inclusion term of F45.8) and teeth grinding may have both codes reported. If it is not clear whether the conditions are related, query the provider.

Related References

ICD-10-CM Official GuidelinesICD-10-CM Code LookupICD-10-CM Codes ListCode Lists by Tag

Source: FY 2027 ICD-10-CM Tabular List (CMS and NCHS) and the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027, Section I.A. ICD List is not affiliated with CMS or NCHS.