2027 ICD-10-CM Diagnosis Code I78.8Other diseases of capillaries
ICD-10-CM Codes›I00–I99›I70-I79›I78
- Billable — Valid for Submission
- Chronic Condition
I78.8 is a billable ICD-10-CM diagnosis code for other diseases of capillaries. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 299 through 301. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified circulatory disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acquired hemangiomatosis
- Capillaritis
- Capillaritis caused by drug
- Capillary hemorrhage
- Capillary hyperpermeability
- Capillary leak syndrome
- Capillary thrombosis
- Decreased capillary fragility
- Decreased capillary resistance
- Decreased vascular resistance
- Dilated capillaries
- Edema of soft tissue due to increased capillary pressure
- Familial pulmonary capillary hemangiomatosis
- Idiopathic capillaritis
- Increased blood vessel permeability
- Increased capillary permeability
- Increased capillary resistance
- Increased vascular resistance
- Isolated pulmonary capillaritis
- Multiple progressive hemangiomata
- Necrosis of capillary of kidney due to glomerular disease
- Occlusion of cutaneous microvasculature structure by cardiac embolus
- Occlusion of microvasculature of skin caused by cryoglobulin type III
- Occlusion of microvasculature of skin caused by embolus
- Occlusion of microvasculature of skin caused by platelet plug
- Occlusion of microvasculature of skin due to coagulopathy
- Occlusion of microvasculature of skin due to myeloproliferative disorder-associated platelet plugs
- Occlusion of microvasculature of skin due to platelet thrombus associated with paroxysmal nocturnal hemoglobinuria
- Platelet embolism
- Pulmonary capillaritis
- Pulmonary capillary hemangiomatosis
- Pulmonary hypertension due to familial pulmonary capillary hemangiomatosis
- Pulmonary hypertension due to pulmonary capillary hemangiomatosis
- Strawberry nevus of skin
- Structural abnormality of capillary
- Structural abnormality of glomerular capillary
- Sunburst telangiectases
- Ulcero - mutilating hemangiomatosis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to I78.8: 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.
- 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.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name I78.8, its category, or a range that includes it.
Use Additional Code 1
These codes say to use an additional code from the note, and I78.8 is one of the codes named.
- M31.11 Hematopoietic stem cell transplantation-associated thrombotic microangiopathy [HSCT-TMA]capillary leak syndrome (I78.8)
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
capillaries I78.8
Disease, diseased See Also: Syndrome;
specified NEC I78.8
capillary I78.8
capillaries I78.8
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Convert I78.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I78.8Overview
What is the ICD-10 code for other diseases of capillaries?
The ICD-10-CM code for other diseases of capillaries is I78.8 (sometimes written as I788). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is I78.8 (Diseases of capillaries) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other diseases of capillaries on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does I78.8 group to?
When other diseases of capillaries is the principal diagnosis on an inpatient stay, it groups to MS-DRG 301, 300, 299, with relative weights from 0.7132 to 1.5840 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of I78.8?
Under the General Equivalence Mappings, other diseases of capillaries converts to ICD-9-CM 448.9 (capillary dis NEC/NOS). The mapping is approximate, so confirm the match fits the documentation.
