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ICD-10-CM 2027 diagnosis code

J03.01Acute recurrent streptococcal tonsillitis

✓ Billable / specific

J03.01 is a valid, billable ICD-10-CM code for acute recurrent streptococcal tonsillitis. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

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 J03.01

J03.01 is the ICD-10-CM diagnosis code for acute recurrent streptococcal tonsillitis. It belongs to category J03 (acute tonsillitis), block J00-J06 (acute upper respiratory infections) 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 J03.0 (streptococcal tonsillitis), J03.01 is specifically for acute recurrent streptococcal tonsillitis. Related codes cover streptococcal tonsillitis, unspecified (J03.00).

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 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC, relative weight 5.6154), DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC, relative weight 4.381), DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC, relative weight 2.7307), DRG 152 (Otitis Media and URI with MCC, relative weight 1.1151) and DRG 153 (Otitis Media and URI without MCC, relative weight 0.7421), in Pre-MDC and MDC 03 (Diseases and Disorders of the Ear, Nose, Mouth and Throat), 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 034.0 (streptococcal sore throat).

Notes that apply from higher levels

Instructions written at a parent level also apply to J03.01.

› From J03 Acute tonsillitis
Excludes1
  • acute sore throat (J02.-)
  • hypertrophy of tonsils (J35.1)
  • peritonsillar abscess (J36)
  • sore throat NOS (J02.9)
  • streptococcal sore throat (J02.0)
Excludes2
  • chronic tonsillitis (J35.0)

Broader instructions also apply from J00-J06 Acute upper respiratory infections and Chapter 10: Diseases of the respiratory system.

Alphabetic index entries

2 entries

Terms in the official ICD-10-CM index that lead to J03.01.

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 03 · Diseases and Disorders of the Ear, Nose, Mouth and Throat

ICD-9-CM equivalent

Converter →
  • 034.0Streptococcal sore throatapproximate

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 J03.01

Is J03.01 billable?

Yes. J03.01 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can J03.01 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict J03.01 as a principal diagnosis.

Is J03.01 a CC or MCC?

No. J03.01 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does J03.01 group to?

J03.01 is used in the MS-DRG v44.0 logic for MS-DRG 011 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCC), MS-DRG 012 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CC), MS-DRG 013 (Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCC), MS-DRG 152 (Otitis Media and URI with MCC) and MS-DRG 153 (Otitis Media and URI without MCC). 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 J03.01?

The CMS General Equivalence Mappings map J03.01 to ICD-9-CM 034.0.