ICD-10-CM 2027
ICD-10 code for capillary fibrosis
From the official ICD-10-CM alphabetic index entry “Fibrosis, fibrotic › capillary”. Page updated September 29, 2026.
About coding capillary fibrosis
The ICD-10-CM code for capillary fibrosis is I70.90 (Unspecified atherosclerosis).
Within I70.9, choose I70.90 (Unspecified atherosclerosis) only when documentation doesn't support a more specific option: generalized atherosclerosis (I70.91) and chronic total occlusion of artery of the extremities (I70.92).
Use an additional code to identify: exposure to environmental tobacco smoke (Z77.22), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31), tobacco dependence (F17.-) and tobacco use (Z72.0).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific capillary fibrosis codes (official index)
- lung (chronic)
Common questions about capillary fibrosis ICD-10 codes
What is the ICD-10 code for capillary fibrosis?
- I70.90 — Unspecified atherosclerosis.
Is I70.90 billable?
- Yes. I70.90 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I70.90 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I70.90 as a principal diagnosis.
Is I70.90 a CC or MCC?
- No. I70.90 is neither a CC nor an MCC under MS-DRG v44.0.