I77.75 — Dissection of other precerebral arteries
Is I77.75 billable?
Yes — I77.75 is billable for FY2027. I77.75 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. I77.75 may be submitted for encounters from October 1, 2026 through September 30, 2027.
I77.75 at a glance
| Code | I77.75 |
|---|---|
| Description | Dissection of other precerebral arteries |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does I77.75 group to?
I77.75 sits in MDC 05 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 299Peripheral Vascular Disorders with MCCmedical
- 300Peripheral Vascular Disorders with CCmedical
- 301Peripheral Vascular Disorders without CC/MCCmedical
As a secondary diagnosis, I77.75 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.
How is I77.75 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I77.75. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Dissection › artery › basilar
- Dissection › artery › precerebral › specified site NEC
Excludes2 — not included here
The conditions below are not part of I77.75, but a patient may have both at the same time. When documentation supports it, I77.75 and the excluded code may both be reported.
Inclusion terms
Alternative wording in documentation that is classified to I77.75.
- Dissection of basilar artery (trunk)
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I77.75, but a patient may have both at the same time. When documentation supports it, I77.75 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 I77
The conditions below are not part of I77.75, but a patient may have both at the same time. When documentation supports it, I77.75 and the excluded code may both be reported.
Excludes2 — not included here — inherited from I77.7
The conditions below are not part of I77.75, but a patient may have both at the same time. When documentation supports it, I77.75 and the excluded code may both be reported.
How long has I77.75 existed?
I77.75 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the I77.7 family? (8)
- I77.70Dissection of unspecified artery
- I77.71Dissection of carotid artery
- I77.72Dissection of iliac artery
- I77.73Dissection of renal artery
- I77.74Dissection of vertebral artery
- I77.76Dissection of artery of upper extremity
- I77.77Dissection of artery of lower extremity
- I77.79Dissection of other specified artery