I60.6 — Nontraumatic subarachnoid hemorrhage from other intracranial arteries

BillableMCC

Is I60.6 billable?

Yes — I60.6 is billable for FY2027. I60.6 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. I60.6 may be submitted for encounters from October 1, 2026 through September 30, 2027.

I60.6 at a glance

Code	I60.6
Description	Nontraumatic subarachnoid hemorrhage from other intracranial arteries
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does I60.6 group to?

I60.6 sits in MDC 01 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.

020Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with MCCsurgical
021Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with CCsurgical
022Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage without CC/MCCsurgical

As a secondary diagnosis, I60.6 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.

How is I60.6 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to I60.6. They show the wording a clinician may have documented, which often differs from the Tabular description.

Rupture, ruptured › circle of Willis
Aneurysm › circle of Willis › ruptured (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular)
Aneurysm › circle of Willis › congenital › ruptured (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular)
Hemorrhage, hemorrhagic › intracranial › subarachnoid › intracranialartery › specified artery NEC (concealed)

Excludes1 — never code together — inherited from I60-I69

The conditions below can never be reported together with I60.6 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

traumatic intracranial hemorrhage (S06.-)

Excludes1 — never code together — inherited from I60

The conditions below can never be reported together with I60.6 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

syphilitic ruptured cerebral aneurysm (A52.05)

Use additional code — inherited from I60-I69

Report an additional code alongside I60.6 to fully describe the condition. I60.6 is sequenced first.

code to identify presence of:
alcohol abuse and dependence (F10.-)
exposure to environmental tobacco smoke (Z77.22)
history of tobacco dependence (Z87.891)
hypertension (I10-I1A)
occupational exposure to environmental tobacco smoke (Z57.31)
tobacco dependence (F17.-)
tobacco use (Z72.0)

Use additional code — inherited from I60

Report an additional code alongside I60.6 to fully describe the condition. I60.6 is sequenced first.

code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)

Excludes2 — not included here — inherited from Chapter 9

The conditions below are not part of I60.6, but a patient may have both at the same time. When documentation supports it, I60.6 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 I60