I62.1

Nontraumatic extradural hemorrhage

FY2027Chapter 9: Diseases of the circulatory system/I60–I69 Cerebrovascular diseases

BillableComplete code, valid to report

Use additional code
Excludes1
Excludes2

Care settingsHome Health Primary · Neuro Rehabilitation IRF 60% Rule Hospital MCC

I62.1 (also written I621) is a billable ICD-10-CM diagnosis code for nontraumatic extradural hemorrhage. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category I62 (Other and unspecified nontraumatic intracranial hemorrhage). The Alphabetic Index lists it under 4 entries. Its coding notes include a Use additional code instruction, 1 Excludes1 entry and 11 Excludes2 entries.

Use additional code

Add the listed code as a secondary code, if known.

Inherited from I62 Other and unspecified nontraumatic intracranial hemorrhage

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

Also from chapter/block level (8 notes)

Inherited from I60–I69 Cerebrovascular diseases

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)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Also from chapter/block level (1 note)

Inherited from I60–I69 Cerebrovascular diseases

traumatic intracranial hemorrhage (S06.-)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from I62 Other and unspecified nontraumatic intracranial hemorrhage

sequelae of intracranial hemorrhage (I69.2)

Also from chapter/block level (10 notes)

Inherited from Chapter 9 Diseases of the circulatory system

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.-)

Care settings

How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.

Home Health Primary

Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Neuro Rehabilitation clinical group.

Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026

IRF 60% Rule

On the CMS list of diagnoses used to determine presumptive compliance with the IRF 60 percent rule.

Source: CMS IRF Presumptive Compliance-3, FY 2027 IRF PPS final rule files, effective for discharges on or after October 1, 2026

Hospital MCC

Counts as a major complication or comorbidity (MCC) when reported as a secondary diagnosis on an inpatient claim. It does not count when the principal diagnosis is one of the 306 codes in its exclusion list. Some MS-DRGs also ignore a CC or MCC that defines the DRG.

Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix C

Inclusion terms

Conditions classified to this code.

This code

Nontraumatic epidural hemorrhage

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 4 entries