2027 ICD-10-CM Diagnosis Code H04.323Acute dacryocystitis of bilateral lacrimal passages

ICD-10-CM Codes›H00–H59›H00-H05›H04

ICD-10-CM H04.323
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H04.323 is a billable ICD-10-CM diagnosis code for acute dacryocystitis 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 121 through 122. Coders also document this condition as acute dacryocystitis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Oculofacial plastics and orbital conditions.

Code Identity

ICD-10-CM Code
H04.323
Billable Status
Yes — Valid for Submission
Code Describes
Acute dacryocystitis of bilateral lacrimal passages
Short Description
Acute dacryocystitis of bilateral lacrimal passages
Same as the full description in the CMS dataset.
Parent Code
H04.32
Acute dacryocystitis

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH00-H05Disorders of eyelid, lacrimal system and orbit
CategoryH04Disorders of lacrimal system
This CodeH04.323Acute dacryocystitis of bilateral lacrimal passages

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute dacryocystitis
  • Acute dacryocystitis of left lacrimal sac
  • Acute dacryocystitis of right lacrimal sac
  • Bilateral acute dacryocystitis
  • Dacryocystitis of bilateral lacrimal sacs
  • Dacryocystitis of left lacrimal sac
  • Dacryocystitis of right lacrimal sac

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H04.323: its own notes plus those printed at H04.3, 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 H04.3 Acute and unspecified inflammation of lacrimal passages applies to 16 codes
  • neonatal dacryocystitis (P39.1)
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.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name H04.323, its category, or a range that includes it.

Excludes2 3

These codes carry an Excludes2 note naming H04.323: its condition is not part of those codes, and both may be reported when the patient has both.

  • L02.0 Cutaneous abscess, furuncle and carbuncle of face
    abscess of lacrimal passages (H04.3) names H04.3, which includes this code
  • L03 Cellulitis and acute lymphangitis
    cellulitis of lacrimal apparatus (H04.3) names H04.3, which includes this code
  • L03.211 Cellulitis of face
    cellulitis of lacrimal apparatus (H04.3) names H04.3, which includes this code

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 H04.323 to ICD-9-CMHistory

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

ICD-9-CM
375.32 Acute dacryocystitis
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 H04.323Overview

What is the ICD-10 code for acute dacryocystitis of bilateral lacrimal passages?

The ICD-10-CM code for acute dacryocystitis of bilateral lacrimal passages is H04.323 (sometimes written as H04323). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is H04.323 (Acute dacryocystitis) a billable code?

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

What MS-DRG does H04.323 group to?

When acute dacryocystitis of bilateral lacrimal passages is the principal diagnosis on an inpatient stay, it groups to MS-DRG 122, 121, with relative weights from 0.7403 to 1.2249 depending on complications. Higher weights mean higher Medicare reimbursement.

Can H04.323 be reported with P39.1?

Not as a rule. The Excludes1 note at H04.3, which applies to H04.323, lists "neonatal dacryocystitis (P39.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of H04.323?

Under the General Equivalence Mappings, acute dacryocystitis of bilateral lacrimal passages converts to ICD-9-CM 375.32 (acute dacryocystitis). The mapping is approximate, so confirm the match fits the documentation.