ICD-10-CM 2027
ICD-10 code for poliomyelitis acute sequelae
From the official ICD-10-CM alphabetic index entry “Sequelae (of) › poliomyelitis (acute)”. Page updated September 29, 2026.
About coding poliomyelitis acute sequelae
The ICD-10-CM code for poliomyelitis acute sequelae is B91 (Sequelae of poliomyelitis).
Don't report B91 together with the conditions in its Excludes1 note: postpolio syndrome (G14).
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 091 (Other Disorders of Nervous System with MCC, relative weight 1.7046), DRG 092 (Other Disorders of Nervous System with CC, relative weight 1.0239) and DRG 093 (Other Disorders of Nervous System without CC/MCC, relative weight 0.7783), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Don't confuse with (Excludes1 for B91)
- postpolio syndrome (G14)
Common questions about poliomyelitis acute sequelae ICD-10 codes
What is the ICD-10 code for poliomyelitis acute sequelae?
- B91 — Sequelae of poliomyelitis.
Is B91 billable?
- Yes. B91 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B91 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B91 as a principal diagnosis.
Is B91 a CC or MCC?
- No. B91 is neither a CC nor an MCC under MS-DRG v44.0.