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ICD-10-CM 2027 diagnosis code

U09.9Post COVID-19 condition, unspecified

✓ Billable / specific

U09.9 is a valid, billable ICD-10-CM code for post covid-19 condition, unspecified. 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 Post COVID-19 condition.

Code last changed in FY2022 (effective October 1, 2021). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About U09.9

U09.9 is the ICD-10-CM diagnosis code for post COVID-19 condition, unspecified. It belongs to category U09 (post COVID-19 condition), block U00-U49 (Provisional assignment of new diseases of uncertain etiology or emergency use) and chapter 22 (codes for special purposes). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Code first the specific condition related to COVID-19 if known, such as: chronic respiratory failure (J96.1-), loss of smell (R43.8), loss of taste (R43.8), multisystem inflammatory syndrome (M35.81) and 2 more.

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 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), 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 was added in FY2022, effective October 1, 2021.

Coding notes

Note
  • This code enables establishment of a link with COVID-19.
  • This code is not to be used in cases that are still presenting with active COVID-19. However, an exception is made in cases of re-infection with COVID-19, occurring with a condition related to prior COVID-19.
Applicable toConditions and synonyms classified to this code
  • Post-acute sequela of COVID-19
Code firstSequence the underlying condition first
  • the specific condition related to COVID-19 if known, such as:
  • chronic respiratory failure (J96.1-)
  • loss of smell (R43.8)
  • loss of taste (R43.8)
  • multisystem inflammatory syndrome (M35.81)
  • pulmonary embolism (I26.-)
  • pulmonary fibrosis (J84.10)

Alphabetic index entries

10 entries

Terms in the official ICD-10-CM index that lead to U09.9.

Codes whose notes reference U09.9

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 23 · Factors Influencing Health Status and Other Contacts with Health Services

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
  • FY2022 (effective 10/1/2021): Added
  • No changes since FY2022.

Common questions about U09.9

Is U09.9 billable?

Yes. U09.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can U09.9 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict U09.9 as a principal diagnosis.

Is U09.9 a CC or MCC?

No. U09.9 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does U09.9 group to?

U09.9 is used in the MS-DRG v44.0 logic for MS-DRG 951 (Other Factors Influencing Health Status). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.