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ICD-10-CM 2027

ICD-10 code for Meningismus

R29.1

Meningismus

✓ Billable / specificCC — complication/comorbidity

From the official ICD-10-CM alphabetic index entry “Meningismus (infectional) (pneumococcal)”. Page updated September 29, 2026.

About coding Meningismus

The ICD-10-CM code for Meningismus is R29.1 (Meningismus). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on R29.1.

Within R29 (other symptoms and signs involving the nervous and musculoskeletal systems), R29.1 is specifically for Meningismus. Related codes cover tetany (R29.0), abnormal reflex (R29.2), abnormal posture (R29.3), Clicking hip (R29.4), transient paralysis (R29.5), repeated falls (R29.6), National Institutes of Health Stroke Scale (NIHSS) score (R29.7), other symptoms and signs involving the nervous and musculoskeletal systems (R29.8) and 1 more.

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

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.

More specific Meningismus codes (official index)

  • due to serum or vaccine R29.1 — Meningismus
  • influenzal

Common questions about Meningismus ICD-10 codes

What is the ICD-10 code for Meningismus?

R29.1 — Meningismus. More specific codes apply when the documentation supports them: R29.1.

Is R29.1 billable?

Yes. R29.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can R29.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict R29.1 as a principal diagnosis.

Is R29.1 a CC or MCC?

R29.1 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.