I25.110 — Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
Is I25.110 billable?
Yes — I25.110 is billable for FY2027. I25.110 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. I25.110 may be submitted for encounters from October 1, 2026 through September 30, 2027.
I25.110 at a glance
| Code | I25.110 |
|---|---|
| Description | Atherosclerotic heart disease of native coronary artery with unstable angina pectoris |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does I25.110 group to?
I25.110 sits in MDC 05 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 302Atherosclerosis with MCCmedical
- 303Atherosclerosis without MCCmedical
As a secondary diagnosis, I25.110 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is I25.110 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I25.110. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Arteriosclerosis, arteriosclerotic › coronary › native vessel › with › angina pectoris › unstable (diffuse) (obliterans) (of) (senile) (with calcification)
Excludes1 — never code together
The conditions below can never be reported together with I25.110 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- unstable angina without atherosclerotic heart disease (I20.0)
Use additional code — inherited from I25
Report an additional code alongside I25.110 to fully describe the condition. I25.110 is sequenced first.
Use additional code — inherited from I25.1
Report an additional code alongside I25.110 to fully describe the condition. I25.110 is sequenced first.
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I25.110, but a patient may have both at the same time. When documentation supports it, I25.110 and the excluded code may both 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.-)
Excludes2 — not included here — inherited from I25
The conditions below are not part of I25.110, but a patient may have both at the same time. When documentation supports it, I25.110 and the excluded code may both be reported.
- non-ischemic myocardial injury (I5A)
Excludes2 — not included here — inherited from I25.1
The conditions below are not part of I25.110, but a patient may have both at the same time. When documentation supports it, I25.110 and the excluded code may both be reported.
Code also — inherited from I20-I25
Two codes may be needed to describe the condition fully. Whether I25.110 is sequenced first depends on the reason for the encounter.
- the presence of hypertension (I10-I1A)
How long has I25.110 existed?
I25.110 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which conditions are coded to I25.110?
What other codes are in the I25.11 family? (4)
- I25.111Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm
- I25.112Atherosclerotic heart disease of native coronary artery with refractory angina pectoris
- I25.118Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
- I25.119Atherosclerotic heart disease of native coronary artery with unspecified angina pectoris