ICD-10-CM 2027 diagnosis code
J35.8Other chronic diseases of tonsils and adenoids
J35.8 is a valid, billable ICD-10-CM code for other chronic diseases of tonsils and adenoids. 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 Amygdalolith.
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 J35.8
J35.8 is the ICD-10-CM diagnosis code for other chronic diseases of tonsils and adenoids. It belongs to category J35 (chronic diseases of tonsils and adenoids), block J30-J39 (other diseases of upper respiratory tract) 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 J35, choose J35.8 (Other chronic diseases of tonsils and adenoids) only when documentation doesn't support a more specific option: chronic tonsillitis and adenoiditis (J35.0), hypertrophy of tonsils (J35.1), hypertrophy of adenoids (J35.2), hypertrophy of tonsils with hypertrophy of adenoids (J35.3) and chronic disease of tonsils and adenoids, unspecified (J35.9).
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 154 (Other Ear, Nose, Mouth and Throat Diagnoses with MCC, relative weight 1.5921), DRG 155 (Other Ear, Nose, Mouth and Throat Diagnoses with CC, relative weight 0.9322) and DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC, relative weight 0.6659), 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 474.2 (adenoid vegetations) and 474.8 (other chronic disease of tonsils and adenoids).
Coding notes
- Adenoid vegetations
- Amygdalolith
- Calculus, tonsil
- Cicatrix of tonsil (and adenoid)
- Tonsillar tag
- Ulcer of tonsil
Notes that apply from higher levels
Instructions written at a parent level also apply to J35.8.
Broader instructions also apply from Chapter 10: Diseases of the respiratory system.
Alphabetic index entries
21 entriesTerms in the official ICD-10-CM index that lead to J35.8.
- Amygdalolith
- Calculus, calculi, calculous › tonsil
- Cicatrix (adherent) (contracted) (painful) (vicious) › adenoid (and tonsil)
- Cicatrix (adherent) (contracted) (painful) (vicious) › tonsil (and adenoid)
- Concretion › tonsil
- Cyst (colloid) (mucous) (simple) (retention) › adenoid (infected)
- Cyst (colloid) (mucous) (simple) (retention) › tonsil
- Growth (fungoid) (neoplastic) (new) › adenoid (vegetative)
- Hemorrhage, hemorrhagic (concealed) › adenoid
- Hemorrhage, hemorrhagic (concealed) › peritonsillar tissue
- Hemorrhage, hemorrhagic (concealed) › tonsil
- Keratosis › tonsillaris
- Necrosis, necrotic (ischemic) › tonsil
- Plica › tonsil
- Remnant › tonsil
- Rupture, ruptured › tonsil
- Tag (hypertrophied skin) (infected) › adenoid
- Tag (hypertrophied skin) (infected) › tonsil
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › peritonsillar
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative › tonsil
- Vegetation, vegetative › adenoid (nasal fossa)
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 PRE · Pre-MDC
MDC 03 · Diseases and Disorders of the Ear, Nose, Mouth and Throat
ICD-9-CM equivalent
Converter →From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about J35.8
Is J35.8 billable?
- Yes. J35.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J35.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J35.8 as a principal diagnosis.
Is J35.8 a CC or MCC?
- No. J35.8 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does J35.8 group to?
- J35.8 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 154 (Other Ear, Nose, Mouth and Throat Diagnoses with MCC), MS-DRG 155 (Other Ear, Nose, Mouth and Throat Diagnoses with CC) and MS-DRG 156 (Other Ear, Nose, Mouth and Throat Diagnoses without CC/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 J35.8?
- The CMS General Equivalence Mappings map J35.8 to ICD-9-CM 474.2 and 474.8.