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ICD-10-CM 2027 diagnosis code

J10.1Influenza due to other identified influenza virus with other respiratory manifestations

✓ Billable / specific

J10.1 is a valid, billable ICD-10-CM code for influenza due to other identified influenza virus with other respiratory manifestations. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Flu due to oth ident influenza virus w oth resp manifest

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 J10.1

J10.1 is the ICD-10-CM diagnosis code for influenza due to other identified influenza virus with other respiratory manifestations. It belongs to category J10 (influenza due to other identified influenza virus), block J09-J18 (influenza and pneumonia) and chapter 10 (diseases of the respiratory 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 J10, choose J10.1 (with other respiratory manifestations) only when documentation doesn't support a more specific option: with pneumonia (J10.0), with gastrointestinal manifestations (J10.2) and with other manifestations (J10.8).

Use an additional code for associated pleural effusion, if applicable (J91.8). Use an additional code for associated sinusitis, if applicable (J01.-).

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 193 (Simple Pneumonia and Pleurisy with MCC, relative weight 1.2825), DRG 194 (Simple Pneumonia and Pleurisy with CC, relative weight 0.7888), DRG 195 (Simple Pneumonia and Pleurisy without CC/MCC, relative weight 0.6063), 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 04 (Diseases and Disorders of the Respiratory 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 487.1 (influenza with other respiratory manifestations) and 488.12 (influenza due to identified 2009 H1N1 influenza virus with other respiratory manifestations).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Influenza due to other identified influenza virus NOS
  • Influenza due to other identified influenza virus with laryngitis
  • Influenza due to other identified influenza virus with pharyngitis
  • Influenza due to other identified influenza virus with upper respiratory symptoms
Use additional codeAdd a secondary code to fully describe the condition
  • code for associated pleural effusion, if applicable (J91.8)
  • code for associated sinusitis, if applicable (J01.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to J10.1.

› From J10 Influenza due to other identified influenza virus
Includes
  • influenza A (non-novel)
  • influenza B
  • influenza C
Excludes1
  • influenza due to avian influenza virus (J09.X-)
  • influenza due to swine flu (J09.X-)
  • influenza due to unidentifed influenza virus (J11.-)

Broader instructions also apply from J09-J18 Influenza and pneumonia and Chapter 10: Diseases of the respiratory system.

Alphabetic index entries

6 entries

Terms in the official ICD-10-CM index that lead to J10.1.

Codes whose notes reference J10.1

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 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 →
  • 487.1Influenza with other respiratory manifestationsapproximate
  • 488.12Influenza due to identified 2009 H1N1 influenza virus with other respiratory manifestationsapproximate

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 J10.1

Is J10.1 billable?

Yes. J10.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can J10.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict J10.1 as a principal diagnosis.

Is J10.1 a CC or MCC?

No. J10.1 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does J10.1 group to?

J10.1 is used in the MS-DRG v44.0 logic for MS-DRG 193 (Simple Pneumonia and Pleurisy with MCC), MS-DRG 194 (Simple Pneumonia and Pleurisy with CC), MS-DRG 195 (Simple Pneumonia and Pleurisy without CC/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 J10.1?

The CMS General Equivalence Mappings map J10.1 to ICD-9-CM 487.1 and 488.12.