N.H. Rev. Stat. § 135-C:32
No person shall be admitted for an involuntary emergency admission under RSA 135-C:27-33 for longer than a 10-day period, not including Saturdays and Sundays, unless a subsequent petition for involuntary emergency admission which contains allegations of specific acts or actions which occurred subsequent to the initial involuntary emergency admission is completed and the admission is ordered by a physician, PA, or APRN, as defined in RSA 135-C:2, II-a, in accordance with RSA 135-C:28, or unless a petition requesting a judicial hearing on the issue of involuntary admission under RSA 135-C:34-54 has been filed with the appropriate probate court within the involuntary admission period. Upon the filing of the petition with the probate court, the period of involuntary emergency admission may be extended until the issuance of the order of the probate court pursuant to RSA 135-C:45.
RSA 135-C:32
1986, 212:1. 1995, 310:19. 2001, 184:4. 2009, 54:4. 2010, 293:3, eff. Sept. 11, 2010. 2019, 278:6, eff. Sept. 17, 2019.