A18.52 Tuberculous keratitis

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Tuberculous interstitial keratitis
• Tuberculous keratoconjunctivitis (interstitial) (phlyctenular)

Applies from A18.5 Tuberculosis of eye

Excludes2 (not included here)

• lupus vulgaris of eyelid (A18.4)

MS-DRG index

Defines the logic of DRG(s) 124-125 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 017.30 Tuberculosis of eye, unspecified (approximate)
• 017.30 Tuberculosis of eye, unspecified (approximate)
• 017.30 Tuberculosis of eye, unspecified (approximate)
• 370.31 Phlyctenular keratoconjunctivitis (approximate)
• 370.59 Other interstitial and deep keratitis (approximate)

Code annotations containing back-references to A18.52

Back-references to A18

• Type 2 Excludes: A31 Infection due to other mycobacteria ("tuberculosis (A15-A19)")

Diagnosis Index entries for A18.52

• Keratitis (nodular) (nonulcerative) (simple) (zonular) › in (due to) › tuberculosis
• Keratitis (nodular) (nonulcerative) (simple) (zonular) › interstitial (nonsyphilitic) › tuberculous
• Keratitis (nodular) (nonulcerative) (simple) (zonular) › tuberculous
• Keratoconjunctivitis › tuberculous (phlyctenular)
• Keratoscleritis, tuberculous
• Phlyctenulosis (allergic) (keratoconjunctivitis) (nontuberculous) › tuberculous
• Sclerokeratitis › tuberculous
• Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › cornea (ulcer)
• Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › keratitis (interstitial)
• Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › keratoconjunctivitis
• Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › phlyctenulosis (keratoconjunctivitis)
• Ulcer, ulcerated, ulcerating, ulceration, ulcerative › cornea › tuberculous (phlyctenular)

Nearby codes

• A18.39 Retroperitoneal tuberculosis
• A18.4 Tuberculosis of skin and subcutaneous tissue
• A18.5 Tuberculosis of eye
• A18.50 Tuberculosis of eye, unspecified
• A18.51 Tuberculous episcleritis
• A18.52 Tuberculous keratitis (this code)
• A18.53 Tuberculous chorioretinitis
• A18.54 Tuberculous iridocyclitis
• A18.59 Other tuberculosis of eye
• A18.6 Tuberculosis of (inner) (middle) ear
• A18.7 Tuberculosis of adrenal glands