I89.1

Billable

ChapterI00–I99

Ranksubcategory

Official Description

Lymphangitis

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 9: Diseases of the Circulatory System (I00-I99).

Instructional Notes

Includes

Chronic lymphangitis
Lymphangitis NOS
Subacute lymphangitis

Excludes1(Not coded here)

acute lymphangitis (L03.-)

General instructions are available for the parent sections:

View CH9 Notes View I89 Notes

Clinical Hierarchy

CH9Diseases of the circulatory system (I00-I99)

I80-I89Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified (I80-I89)

I89Other noninfective disorders of lymphatic vessels and lymph nodes

I89.1Lymphangitis

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I89.1:

categoryI89

Other noninfective disorders of lymphatic vessels and lymph nodes

View context instructions

chapterCH9

Diseases of the circulatory system (I00-I99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to I89.1. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

4 raw paths

Gangrene, gangrenous (connective tissue) (dropsical) (dry) (moist) (skin) (ulcer)1 unique routes

lymphangitis→I89.1

Lymphangitis3 unique routes

Direct index entry→I89.1

chronic (any site)→I89.1

subacute (any site)→I89.1

MS-DRG Classification

2026 v43.1

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

DRG 602

Cellulitis with MCC

DRG 603

Cellulitis without MCC

DRG 791

Prematurity with Major Problems

DRG 793

Full Term Neonate with Major Problems

Cross Reference

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