2027 ICD-10-CM Diagnosis Code G97.84Intracranial hypotension following other procedure

ICD-10-CM Codes›G00–G99›G89-G99›G97

ICD-10-CM G97.84
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

G97.84 is a billable ICD-10-CM diagnosis code for intracranial hypotension following other procedure. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 91 through 93, 791, 793. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 12 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative nervous system complication.

Code Identity

ICD-10-CM Code
G97.84
Billable Status
Yes — Valid for Submission
Code Describes
Intracranial hypotension following other procedure
Short Description
Intracranial hypotension following other procedure
Same as the full description in the CMS dataset.
Parent Code
G97.8
Other intraoperative and postprocedural complications and disorders of nervous system

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG97Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified
This CodeG97.84Intracranial hypotension following other procedure

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to G97.84: its own notes plus those printed at G97.8, G97, and Chapter 6. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From G97 Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified applies to 18 codes
  • intraoperative and postprocedural cerebrovascular infarction (I97.81-, I97.82-)
From Chapter 6 (G00-G99) Diseases of the nervous system applies to 700 codes
  • 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)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From G97.8 Other intraoperative and postprocedural complications and disorders of nervous system applies to 4 codes
  • code to further specify disorder

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

  • if applicable:
  • accidental puncture or laceration of dura during a procedure (G97.41)
  • cerebrospinal fluid leak from spinal puncture (G97.0)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name G97.84, its category, or a range that includes it.

Code Also 1

These codes say G97.84 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • G97.0 Cerebrospinal fluid leak from spinal puncture
    intracranial hypotension following a procedure (G97.83-G97.84) names G97.83-G97.84, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS021
Postprocedural or postoperative nervous system complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement G97.84 replaces the following previously assigned code(s):

  • G97.82 - Oth postproc complications and disorders of nervous sys
FY 2021AddedAdded to the ICD-10-CM code setEffective October 1, 2020.
FY 2022–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About G97.84Overview

What is the ICD-10 code for intracranial hypotension following other procedure?

The ICD-10-CM code for intracranial hypotension following other procedure is G97.84 (sometimes written as G9784). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is G97.84 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report intracranial hypotension following other procedure on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does G97.84 group to?

When intracranial hypotension following other procedure is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 91, 92, 93, with relative weights from 0.7783 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.

Is G97.84 a CC or MCC?

CMS lists G97.84 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 12 closely related codes in its exclusion list.

Does G97.84 need an additional code?

When the condition applies, yes. The Use Additional Code note at G97.8, which applies to G97.84, reads: code to further specify disorder. The additional code is reported after G97.84.