2027 ICD-10-CM Diagnosis Code I78Diseases of capillaries

ICD-10-CM Codes›I00–I99›I70-I79›I78

ICD-10-CM I78
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

I78 is a non-billable ICD-10-CM category code for diseases of capillaries, so it cannot be submitted on claims. Use a more specific code from this category instead, such as I78.0, I78.1, I78.8, and I78.9.

Code Identity

ICD-10-CM Code
I78
Billable Status
No — Non-Billable Category
Code Describes
Diseases of capillaries
Short Description
Diseases of capillaries
Same as the full description in the CMS dataset.
Chapter
I70-I79
Diseases of arteries, arterioles and capillaries

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI70-I79Diseases of arteries, arterioles and capillaries
CategoryI78Diseases of capillaries
This CodeI78Diseases of capillaries

Specific Coding for Diseases of capillariesOverview

Non-specific codes like I78 require more characters. Use one of these billable codes instead:

  • Use I78.0 for Hereditary hemorrhagic telangiectasia

  • Use I78.1 for Nevus, non-neoplastic

  • Use I78.8 for Other diseases of capillaries

  • Use I78.9 for Disease of capillaries, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I78: its own notes plus those printed at Chapter 9. A note printed at a category, block or chapter applies to every code under it.

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 Chapter 9 (I00-I99) Diseases of the circulatory system applies to 1,433 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)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • 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)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

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

Patient EducationClinical

Vascular Diseases

Your vascular system is your body's network of blood vessels. It includes your:

The full article covers:

  • What are vascular diseases?
  • What causes vascular diseases?
  • Who is at risk for vascular diseases?
  • What are the symptoms of vascular diseases?
  • How are vascular diseases diagnosed?
  • How are vascular diseases treated?
  • Can vascular diseases be prevented?

Read the full article at MedlinePlus

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

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 I78Overview

What is the ICD-10 code for diseases of capillaries?

I78 is the ICD-10-CM category for diseases of capillaries, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is I78 (Diseases of capillaries) a billable code?

No. This is a category header that groups the codes for diseases of capillaries, and headers cannot be submitted on claims. Claims for diseases of capillaries need a more specific code from this category, such as I78.0, I78.1, and I78.8.