All ICD10 Codes

A18.52

Billable
ChapterA00–B99
Ranksubcategory
Official Description

Tuberculous keratitis

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

Instructional Notes

Includes
  • Tuberculous interstitial keratitis
  • Tuberculous keratoconjunctivitis (interstitial) (phlyctenular)
General instructions are available for the parent sections:
View CH1 NotesView A15-A19 NotesView A18.5 Notes

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)
A15-A19Tuberculosis (A15-A19)
A18Tuberculosis of other organs
A18.5Tuberculosis of eye
A18.52Tuberculous keratitis

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A18.52:

subcategoryA18.5
Tuberculosis of eye
View context instructions
blockA15-A19
Tuberculosis (A15-A19)
View context instructions
chapterCH1
Certain infectious and parasitic diseases (A00-B99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to A18.52. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

12 raw paths
Keratitis (nodular) (nonulcerative) (simple) (zonular)3 unique routes
in (due to)
tuberculosis→A18.52
interstitial (nonsyphilitic)
tuberculous→A18.52
tuberculous→A18.52
Keratoconjunctivitis1 unique routes
tuberculous (phlyctenular)→A18.52
Keratoscleritis, tuberculous1 unique routes
Direct index entry→A18.52
Phlyctenulosis (allergic) (keratoconjunctivitis) (nontuberculous)1 unique routes
tuberculous→A18.52
Sclerokeratitis1 unique routes
tuberculous→A18.52
Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative)4 unique routes
cornea (ulcer)→A18.52
keratitis (interstitial)→A18.52
keratoconjunctivitis→A18.52
phlyctenulosis (keratoconjunctivitis)→A18.52
Ulcer, ulcerated, ulcerating, ulceration, ulcerative1 unique routes
cornea
tuberculous (phlyctenular)→A18.52

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 124
Other Disorders of the Eye with MCC or Thrombolytic Agent
DRG 125
Other Disorders of the Eye without MCC
DRG 974
HIV with Major Related Condition with MCC
DRG 975
HIV with Major Related Condition with CC
DRG 976
HIV with Major Related Condition without CC/MCC

Cross Reference

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