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ICD-10-CM 2027 diagnosis code

G97.1Other reaction to spinal and lumbar puncture

✓ Billable / specific

G97.1 is a valid, billable ICD-10-CM code for other reaction to spinal and lumbar puncture. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for Lumbar puncture complication.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About G97.1

G97.1 is the ICD-10-CM diagnosis code for other reaction to spinal and lumbar puncture. It belongs to category G97 (intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified), block G89-G99 (other disorders of the nervous system) and chapter 6 (diseases of the nervous system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within G97, choose G97.1 (Other reaction to spinal and lumbar puncture) only when documentation doesn't support a more specific option: cerebrospinal fluid leak from spinal puncture (G97.0), intracranial hypotension following ventricular shunting (G97.2), intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a procedure (G97.3), accidental puncture and laceration of a nervous system organ or structure during a procedure (G97.4), postprocedural hemorrhage of a nervous system organ or structure following a procedure (G97.5), postprocedural hematoma and seroma of a nervous system organ or structure following a procedure (G97.6) and other intraoperative and postprocedural complications and disorders of nervous system (G97.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 102 (Headaches with MCC, relative weight 1.1201), DRG 103 (Headaches without MCC, relative weight 0.822), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 01 (Diseases and Disorders of the Nervous System) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 349.0 (reaction to spinal or lumbar puncture).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Headache due to lumbar puncture
  • Other reaction to spinal dural puncture
Code alsoTwo codes may be needed; sequencing depends on circumstances
  • , if applicable, any associated headache with orthostatic component (R51.0)

Notes that apply from higher levels

Instructions written at a parent level also apply to G97.1.

› From G97 Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified
Excludes2
  • intraoperative and postprocedural cerebrovascular infarction (I97.81-, I97.82-)

Broader instructions also apply from Chapter 6: Diseases of the nervous system.

Alphabetic index entries

15 entries

Terms in the official ICD-10-CM index that lead to G97.1.

Codes whose notes reference G97.1

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 01 · Diseases and Disorders of the Nervous System

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

ICD-9-CM equivalent

Converter →
  • 349.0Reaction to spinal or lumbar punctureapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about G97.1

Is G97.1 billable?

Yes. G97.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can G97.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict G97.1 as a principal diagnosis.

Is G97.1 a CC or MCC?

No. G97.1 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does G97.1 group to?

G97.1 is used in the MS-DRG v44.0 logic for MS-DRG 102 (Headaches with MCC), MS-DRG 103 (Headaches without MCC), MS-DRG 791 (Prematurity with Major Problems) and MS-DRG 793 (Full Term Neonate with Major Problems). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for G97.1?

The CMS General Equivalence Mappings map G97.1 to ICD-9-CM 349.0.