2027 ICD-10-CM Diagnosis Code H04.423Chronic lacrimal canaliculitis of bilateral lacrimal passages

ICD-10-CM Codes›H00–H59›H00-H05›H04

ICD-10-CM H04.423
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H04.423 is a billable ICD-10-CM diagnosis code for chronic lacrimal canaliculitis of bilateral lacrimal passages. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 124 through 125. Coders also document this condition as bilateral chronic lacrimal canaliculitis of eyes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Oculofacial plastics and orbital conditions.

Code Identity

ICD-10-CM Code
H04.423
Billable Status
Yes — Valid for Submission
Code Describes
Chronic lacrimal canaliculitis of bilateral lacrimal passages
Short Description
Chronic lacrimal canaliculitis of bi lacrimal passages
Parent Code
H04.42
Chronic lacrimal canaliculitis

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH00-H05Disorders of eyelid, lacrimal system and orbit
CategoryH04Disorders of lacrimal system
This CodeH04.423Chronic lacrimal canaliculitis of bilateral lacrimal passages

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral chronic lacrimal canaliculitis of eyes
  • Chronic inflammation of lacrimal passage
  • Chronic lacrimal canaliculitis
  • Chronic lacrimal canaliculitis of left eye
  • Chronic lacrimal canaliculitis of right eye

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H04.423: its own notes plus those printed at H04, block H00-H05, and Chapter 7. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From H04 Disorders of lacrimal system applies to 120 codes
  • congenital malformations of lacrimal system (Q10.4-Q10.6)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block H00-H05 Disorders of eyelid, lacrimal system and orbit applies to 574 codes
From Chapter 7 (H00-H59) Diseases of the eye and adnexa applies to 2,677 codes
  • 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)

Notes

General instructions on how these codes are used.

From Chapter 7 (H00-H59) Diseases of the eye and adnexa applies to 2,677 codes
  • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR EYE008
Oculofacial plastics and orbital conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Tears

You may only think of tears as those salty drops that fall from your eyes when you cry. Actually, your tears clean your eyes every time you blink. Tears also keep your eyes moist, which is important for your vision.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert H04.423 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
375.41 Chronic canaliculitis
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About H04.423Overview

What is the ICD-10 code for chronic lacrimal canaliculitis of bilateral lacrimal passages?

The ICD-10-CM code for chronic lacrimal canaliculitis of bilateral lacrimal passages is H04.423 (sometimes written as H04423). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is H04.423 (Chronic lacrimal canaliculitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report chronic lacrimal canaliculitis of bilateral lacrimal passages on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does H04.423 group to?

When chronic lacrimal canaliculitis of bilateral lacrimal passages is the principal diagnosis on an inpatient stay, it groups to MS-DRG 125, 124, with relative weights from 0.7699 to 1.2470 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of H04.423?

Under the General Equivalence Mappings, chronic lacrimal canaliculitis of bilateral lacrimal passages converts to ICD-9-CM 375.41 (chronic canaliculitis). The mapping is approximate, so confirm the match fits the documentation.